{"id":16714,"date":"2026-04-23T07:02:48","date_gmt":"2026-04-23T07:02:48","guid":{"rendered":"https:\/\/www.jet-mills.com\/?p=16714"},"modified":"2026-04-23T07:04:33","modified_gmt":"2026-04-23T07:04:33","slug":"dry-powder-sampling-seven-details-that-determine-whether-your-psd-data-reflects-reality","status":"publish","type":"post","link":"https:\/\/www.jet-mills.com\/vi\/dry-powder-sampling-seven-details-that-determine-whether-your-psd-data-reflects-reality\/","title":{"rendered":"L\u1ea5y m\u1eabu b\u1ed9t kh\u00f4: B\u1ea3y chi ti\u1ebft quy\u1ebft \u0111\u1ecbnh li\u1ec7u d\u1eef li\u1ec7u PSD c\u1ee7a b\u1ea1n c\u00f3 ph\u1ea3n \u00e1nh \u0111\u00fang th\u1ef1c t\u1ebf hay kh\u00f4ng"},"content":{"rendered":"<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Particle-size_distribution\">ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t<\/a> D\u1eef li\u1ec7u ch\u1ec9 t\u1ed1t khi m\u1eabu d\u1eef li\u1ec7u \u0111\u00f3 t\u1ed1t. Trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd b\u1ed9t kh\u00f4 \u2014 <a href=\"http:\/\/www.jet-mills.com\/vi\/products\/\">phay ph\u1ea3n l\u1ef1c<\/a>, Cho d\u00f9 l\u00e0 nghi\u1ec1n bi, nghi\u1ec1n va \u0111\u1eadp hay ph\u00e2n lo\u1ea1i b\u1eb1ng kh\u00ed \u2014 thi\u1ebft b\u1ecb \u0111o hi\u1ebfm khi l\u00e0 v\u1ea5n \u0111\u1ec1. V\u1ea5n \u0111\u1ec1 n\u1eb1m \u1edf m\u1eabu. M\u1ed9t m\u1eabu \u0111\u01b0\u1ee3c l\u1ea5y kh\u00f4ng \u0111\u00fang c\u00e1ch t\u1eeb m\u1ed9t l\u00f4 h\u00e0ng \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1ch, m\u1ed9t m\u1eabu l\u1ea5y t\u1eeb b\u1ec1 m\u1eb7t c\u1ee7a m\u1ed9t th\u00f9ng ch\u1ee9a m\u00e0 c\u00e1c h\u1ea1t th\u00f4 \u0111\u00e3 n\u1ed5i l\u00ean tr\u00ean, ho\u1eb7c m\u1ed9t m\u1eabu b\u1ecb nhi\u1ec5m \u1ea9m trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd c\u00f3 th\u1ec3 khi\u1ebfn m\u1ed9t quy tr\u00ecnh \u1ed5n \u0111\u1ecbnh, \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t t\u1ed1t tr\u00f4ng nh\u01b0 kh\u00f4ng \u0111\u1ea1t ti\u00eau chu\u1ea9n.<\/p>\n\n\n\n<p>H\u1eadu qu\u1ea3 th\u1ef1c t\u1ebf l\u00e0 r\u1ea5t r\u00f5 r\u00e0ng: c\u00e1c k\u1ef9 s\u01b0 \u0111i\u1ec1u ch\u1ec9nh c\u00e1c th\u00f4ng s\u1ed1 quy tr\u00ecnh d\u1ef1a tr\u00ean d\u1eef li\u1ec7u kh\u00f4ng ch\u00ednh x\u00e1c. M\u1ed9t k\u1ebft qu\u1ea3 \u0111o sai cho th\u1ea5y s\u1ea3n ph\u1ea9m qu\u00e1 th\u00f4 s\u1ebd k\u00edch ho\u1ea1t vi\u1ec7c t\u0103ng t\u1ed1c \u0111\u1ed9 m\u00e1y ph\u00e2n lo\u1ea1i ho\u1eb7c k\u00e9o d\u00e0i th\u1eddi gian nghi\u1ec1n kh\u00f4ng c\u1ea7n thi\u1ebft. M\u1ed9t k\u1ebft qu\u1ea3 \u0111o sai cho th\u1ea5y s\u1ea3n ph\u1ea9m qu\u00e1 m\u1ecbn s\u1ebd g\u00e2y ra \u0111i\u1ec1u ng\u01b0\u1ee3c l\u1ea1i. Trong c\u1ea3 hai tr\u01b0\u1eddng h\u1ee3p, nh\u1eefng thay \u0111\u1ed5i quy tr\u00ecnh kh\u00f4ng c\u1ea7n thi\u1ebft \u0111\u1ec1u ti\u00eau t\u1ed1n n\u0103ng l\u01b0\u1ee3ng, l\u00e3ng ph\u00ed th\u1eddi gian v\u00e0 t\u1ea1o ra s\u1ef1 bi\u1ebfn \u0111\u1ed9ng th\u1ef1c t\u1ebf trong m\u1ed9t quy tr\u00ecnh v\u1ed1n d\u0129 c\u00f3 th\u1ec3 ho\u00e0n to\u00e0n \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<p>B\u00e0i vi\u1ebft n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn l\u00fd do t\u1ea1i sao vi\u1ec7c l\u1ea5y m\u1eabu \u0111\u1ea1i di\u1ec7n cho b\u1ed9t kh\u00f4 l\u1ea1i v\u1ed1n d\u0129 r\u1ea5t kh\u00f3 kh\u0103n. B\u00e0i vi\u1ebft c\u0169ng gi\u1ea3i th\u00edch c\u00e1c quy tr\u00ecnh c\u1ee5 th\u1ec3 \u0111\u1ec3 t\u1ea1o ra c\u00e1c m\u1eabu th\u1ef1c s\u1ef1 ph\u1ea3n \u00e1nh \u0111\u00fang \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a l\u00f4 h\u00e0ng.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"225\" height=\"225\" data-id=\"16719\" src=\"https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/dry-powder-1.webp\" alt=\"\" class=\"wp-image-16719\" srcset=\"https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/dry-powder-1.webp 225w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/dry-powder-1-100x100.webp 100w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/dry-powder-1-12x12.webp 12w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/dry-powder-1-300x300.webp 300w\" sizes=\"(max-width: 225px) 100vw, 225px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"275\" height=\"183\" data-id=\"16718\" src=\"https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/dry-powder-sampling.webp\" alt=\"\" class=\"wp-image-16718\" srcset=\"https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/dry-powder-sampling.webp 275w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/dry-powder-sampling-18x12.webp 18w\" sizes=\"(max-width: 275px) 100vw, 275px\" \/><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-why-dry-powder-sampling-goes-wrong\"><mark class=\"has-inline-color has-ast-global-color-0-color\">V\u00ec sao vi\u1ec7c l\u1ea5y m\u1eabu b\u1ed9t kh\u00f4 l\u1ea1i g\u1eb7p tr\u1ee5c tr\u1eb7c?<\/mark><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-particle-size-segregation\"><mark style=\"color:#0693e3\" class=\"has-inline-color\">Ph\u00e2n t\u00e1ch k\u00edch th\u01b0\u1edbc h\u1ea1t<\/mark><\/h3>\n\n\n\n<p>B\u1ed9t kh\u00f4 b\u1ecb ph\u00e2n t\u00e1ch \u2013 c\u00e1c h\u1ea1t th\u00f4 v\u00e0 m\u1ecbn t\u00e1ch bi\u1ec7t v\u1ec1 m\u1eb7t kh\u00f4ng gian \u2013 b\u1ea5t c\u1ee9 khi n\u00e0o b\u1ed9t ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a tr\u1ecdng l\u1ef1c, rung \u0111\u1ed9ng ho\u1eb7c lu\u1ed3ng kh\u00f4ng kh\u00ed. C\u01a1 ch\u1ebf n\u00e0y kh\u00e1c nhau t\u00f9y thu\u1ed9c v\u00e0o b\u1ed1i c\u1ea3nh: trong m\u1ed9t th\u00f9ng ch\u1ee9a t\u0129nh, c\u00e1c h\u1ea1t m\u1ecbn s\u1ebd th\u1ea5m xu\u1ed1ng gi\u1eefa c\u00e1c h\u1ea1t th\u00f4 h\u01a1n d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a tr\u1ecdng l\u1ef1c, t\u1eadp trung \u1edf \u0111\u00e1y trong khi v\u1eadt li\u1ec7u th\u00f4 h\u01a1n n\u1ed5i l\u00ean tr\u00ean. Trong d\u00f2ng ch\u1ea3y \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n b\u1eb1ng kh\u00ed n\u00e9n, c\u00e1c h\u1ea1t m\u1ecbn \u0111\u01b0\u1ee3c lu\u1ed3ng kh\u00f4ng kh\u00ed mang \u0111i \u01b0u ti\u00ean v\u00e0o c\u00e1c v\u00f9ng ch\u1ebft v\u00e0 v\u00f9ng c\u00f3 v\u1eadn t\u1ed1c th\u1ea5p. Trong khi \u0111\u00f3, c\u00e1c h\u1ea1t th\u00f4 h\u01a1n s\u1ebd t\u1eadp trung tr\u1ef1c ti\u1ebfp h\u01a1n v\u00e0o \u0111i\u1ec3m thu gom ch\u00ednh. Trong m\u1ed9t th\u00f9ng ch\u1ee9a rung \u0111\u1ed9ng (nh\u01b0 trong qu\u00e1 tr\u00ecnh v\u1eadn chuy\u1ec3n), c\u00e1c h\u1ea1t m\u1ecbn di chuy\u1ec3n xu\u1ed1ng d\u01b0\u1edbi v\u00e0 c\u00e1c h\u1ea1t th\u00f4 n\u1ed5i l\u00ean \u2013 hi\u1ec7u \u1ee9ng h\u1ea1t Brazil.<\/p>\n\n\n\n<p>H\u1eadu qu\u1ea3 th\u1ef1c ti\u1ec5n \u0111\u1ed1i v\u1edbi vi\u1ec7c l\u1ea5y m\u1eabu l\u00e0 kh\u00f4ng c\u00f3 v\u1ecb tr\u00ed n\u00e0o trong m\u1ed9t l\u00f4 h\u00e0ng c\u00f3 th\u1ec3 \u0111\u1ea1i di\u1ec7n \u0111\u1ea7y \u0111\u1ee7 cho ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t (PSD) c\u1ee7a l\u00f4 h\u00e0ng \u0111\u00f3. M\u1eabu l\u1ea5y t\u1eeb b\u1ec1 m\u1eb7t tr\u00ean c\u00f9ng c\u1ee7a th\u00f9ng ch\u1ee9a s\u1ebd gi\u00e0u c\u00e1c h\u1ea1t th\u00f4; m\u1eabu l\u1ea5y t\u1eeb \u0111\u00e1y s\u1ebd gi\u00e0u c\u00e1c h\u1ea1t m\u1ecbn. C\u1ea3 hai \u0111\u1ec1u kh\u00f4ng sai \u2014 c\u1ea3 hai \u0111\u1ec1u l\u00e0 ph\u00e9p \u0111o th\u1ef1c t\u1ebf \u2014 nh\u01b0ng kh\u00f4ng c\u00e1i n\u00e0o \u0111\u1ea1i di\u1ec7n cho PSD t\u1ed5ng th\u1ec3 c\u1ee7a l\u00f4 h\u00e0ng m\u00e0 quy tr\u00ecnh ti\u1ebfp theo s\u1ebd g\u1eb7p ph\u1ea3i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-surface-area-static-charge-and-agglomeration\"><mark style=\"color:#0693e3\" class=\"has-inline-color\">Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t, \u0111i\u1ec7n t\u00edch t\u0129nh v\u00e0 s\u1ef1 k\u1ebft t\u1ee5<\/mark><\/h3>\n\n\n\n<p>B\u1ed9t kh\u00f4 m\u1ecbn \u2014 \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng lo\u1ea1i c\u00f3 D50 d\u01b0\u1edbi 10 micron t\u1eeb <a href=\"\/vi\/products\/fluidized-bed-jet-mill-supplier\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"nh\u00e0 m\u00e1y ph\u1ea3n l\u1ef1c\" target=\"_blank\" rel=\"noopener\">phay ph\u1ea3n l\u1ef1c<\/a> Ho\u1eb7c c\u00e1c v\u1eadt li\u1ec7u d\u1ea1ng h\u1ea1t m\u1ecbn \u2013 c\u00f3 di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang l\u1edbn v\u00e0 t\u00edch t\u1ee5 \u0111i\u1ec7n t\u00edch t\u0129nh \u0111i\u1ec7n. Hai \u0111\u1eb7c t\u00ednh n\u00e0y khi\u1ebfn c\u00e1c h\u1ea1t b\u00e1m d\u00ednh v\u00e0o th\u00e0nh th\u00f9ng ch\u1ee9a, b\u1ec1 m\u1eb7t d\u1ee5ng c\u1ee5 l\u1ea5y m\u1eabu v\u00e0 b\u00e1m v\u00e0o nhau. Khi l\u1ea5y m\u1eabu t\u1eeb th\u00f9ng ch\u1ee9a, c\u00e1c h\u1ea1t m\u1ecbn nh\u1ea5t s\u1ebd b\u00e1m v\u00e0o b\u1ec1 m\u1eb7t d\u1ee5ng c\u1ee5 l\u1ea5y m\u1eabu v\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ec1u v\u00e0o th\u00f9ng ch\u1ee9a m\u1eabu. Do \u0111\u00f3, m\u1eabu l\u1ea5y ra s\u1ebd th\u00f4 h\u01a1n so v\u1edbi v\u1eadt li\u1ec7u kh\u1ed1i.<\/p>\n\n\n\n<p>S\u1ef1 k\u1ebft t\u1ee5 g\u00e2y ra m\u1ed9t lo\u1ea1i sai s\u1ed1 kh\u00e1c. L\u1ef1c Van der Waals v\u00e0 l\u1ef1c h\u00fat t\u0129nh \u0111i\u1ec7n gi\u1eefa c\u00e1c h\u1ea1t m\u1ecbn t\u1ea1o th\u00e0nh c\u00e1c c\u1ee5m m\u1ec1m \u2014 c\u00e1c c\u1ee5m h\u1ea1t ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t h\u1ea1t l\u1edbn duy nh\u1ea5t trong qu\u00e1 tr\u00ecnh \u0111o nhi\u1ec5u x\u1ea1 laser n\u1ebfu \u0111i\u1ec1u ki\u1ec7n ph\u00e2n t\u00e1n kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 ph\u00e1 v\u1ee1 ch\u00fang. M\u1ed9t m\u1eabu b\u1ecb k\u1ebft t\u1ee5 t\u1eeb s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c nghi\u1ec1n m\u1ecbn s\u1ebd cho k\u1ebft qu\u1ea3 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t (PSD) hai \u0111\u1ec9nh ho\u1eb7c m\u1edf r\u1ed9ng v\u1edbi ph\u1ea7n \u0111u\u00f4i th\u00f4 r\u00f5 r\u00e0ng, kh\u00f4ng ph\u1ea3n \u00e1nh \u0111\u00fang ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t s\u01a1 c\u1ea5p th\u1ef1c s\u1ef1.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>\u0110\u1eb7c t\u00ednh c\u1ee7a b\u1ed9t kh\u00f4<\/strong><\/td><td><strong>H\u1eadu qu\u1ea3 l\u1ea5y m\u1eabu<\/strong><\/td><td><strong>H\u01b0\u1edbng l\u1ed7i<\/strong><\/td><\/tr><tr><td>PSD r\u1ed9ng \u2014 k\u1ebft h\u1ee3p c\u1ea3 h\u1ea1t th\u00f4 v\u00e0 h\u1ea1t m\u1ecbn.<\/td><td>Ph\u00e2n t\u00e1ch b\u1eb1ng tr\u1ecdng l\u1ef1c trong th\u00f9ng ch\u1ee9a; v\u1eadt li\u1ec7u th\u00f4 v\u00e0 m\u1ecbn t\u00e1ch bi\u1ec7t v\u1ec1 m\u1eb7t kh\u00f4ng gian.<\/td><td>M\u1eabu l\u1ea5y t\u1ea1i m\u1ed9t \u0111i\u1ec3m duy nh\u1ea5t kh\u00f4ng ph\u1ea3n \u00e1nh \u0111\u00fang to\u00e0n b\u1ed9 l\u00f4 h\u00e0ng.<\/td><\/tr><tr><td>Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang l\u1edbn v\u00e0 \u0111i\u1ec7n t\u00edch t\u0129nh cao<\/td><td>C\u00e1c h\u1ea1t b\u00e1m v\u00e0o d\u1ee5ng c\u1ee5 l\u1ea5y m\u1eabu; c\u00e1c h\u1ea1t m\u1ecbn b\u1ecb gi\u1eef l\u1ea1i tr\u00ean th\u00e0nh d\u1ee5ng c\u1ee5.<\/td><td>M\u1eabu c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t l\u1edbn h\u01a1n so v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn \u2014 r\u00f5 r\u00e0ng l\u00e0 ch\u01b0a \u0111\u01b0\u1ee3c nghi\u1ec1n k\u1ef9.<\/td><\/tr><tr><td>Ch\u1ea5t k\u1ebft t\u1ee5 m\u1ec1m (t\u0129nh, van der Waals)<\/td><td>C\u00e1c c\u1ee5m h\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb d\u01b0\u1edbi d\u1ea1ng c\u00e1c h\u1ea1t th\u00f4 trong ph\u00e9p \u0111o nhi\u1ec5u x\u1ea1 laser n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n.<\/td><td>\u0110u\u00f4i th\u00f4 r\u00f5 r\u00e0ng \u2014 \u0111\u1ecdc sai<\/td><\/tr><tr><td>B\u1ec1 m\u1eb7t h\u00fat \u1ea9m (d\u01b0\u1ee3c ph\u1ea9m, th\u1ef1c ph\u1ea9m)<\/td><td>S\u1ef1 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m trong qu\u00e1 tr\u00ecnh l\u1ea5y m\u1eabu g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng v\u00f3n c\u1ee5c.<\/td><td>D50 ph\u1ed3ng l\u00ean; s\u1ef1 ph\u00e2n b\u1ed1 m\u1ecbn th\u1ef1c s\u1ef1 b\u1ecb che khu\u1ea5t.<\/td><\/tr><tr><td>Kh\u1ed1i l\u01b0\u1ee3ng ri\u00eang th\u1ea5p, d\u1ec5 d\u00e0ng h\u00f3a l\u1ecfng<\/td><td>Lu\u1ed3ng kh\u00f4ng kh\u00ed trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd ph\u00e2n t\u00e1n l\u1ea1i c\u00e1c h\u1ea1t.<\/td><td>S\u1ef1 ph\u00e2n t\u00e1ch k\u00edch th\u01b0\u1edbc kh\u00f4ng th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c do d\u00f2ng kh\u00ed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-seven-sampling-details-that-make-a-measurable-difference\"><mark class=\"has-inline-color has-ast-global-color-0-color\">B\u1ea3y chi ti\u1ebft l\u1ea5y m\u1eabu t\u1ea1o n\u00ean s\u1ef1 kh\u00e1c bi\u1ec7t c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c<\/mark><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"550\" height=\"550\" src=\"https:\/\/www.jet-mills.com\/wp-content\/uploads\/2025\/10\/Alpha-Aluminum-Oxide-Powder.webp\" alt=\"B\u1ed9t nh\u00f4m oxit Alpha\" class=\"wp-image-16086\" style=\"width:628px;height:auto\" srcset=\"https:\/\/www.jet-mills.com\/wp-content\/uploads\/2025\/10\/Alpha-Aluminum-Oxide-Powder.webp 550w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2025\/10\/Alpha-Aluminum-Oxide-Powder-300x300.webp 300w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2025\/10\/Alpha-Aluminum-Oxide-Powder-100x100.webp 100w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2025\/10\/Alpha-Aluminum-Oxide-Powder-12x12.webp 12w\" sizes=\"(max-width: 550px) 100vw, 550px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-1-use-multi-point-sampling-never-surface-sampling\"><mark style=\"color:#0693e3\" class=\"has-inline-color\">1. S\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p l\u1ea5y m\u1eabu \u0111a \u0111i\u1ec3m, kh\u00f4ng bao gi\u1edd s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p l\u1ea5y m\u1eabu b\u1ec1 m\u1eb7t.<\/mark><\/h3>\n\n\n\n<p>Vi\u1ec7c ch\u1ec9 l\u1ea5y m\u1eabu b\u1ec1 m\u1eb7t t\u1eeb m\u1ed9t bao, th\u00f9ng ho\u1eb7c h\u1ed9p \u0111\u1ef1ng s\u1ea3n ph\u1ea9m l\u00e0 l\u1ed7i l\u1ea5y m\u1eabu ph\u1ed5 bi\u1ebfn nh\u1ea5t trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd b\u1ed9t kh\u00f4. B\u1ec1 m\u1eb7t th\u01b0\u1eddng b\u1ecb l\u00e0m gi\u00e0u c\u00e1c h\u1ea1t th\u00f4 do s\u1ef1 ph\u00e2n t\u00e1ch tr\u1ecdng l\u1ef1c. M\u1eabu \u0111\u1ea1i di\u1ec7n duy nh\u1ea5t t\u1eeb m\u1ed9t h\u1ed9p ch\u1ee9a t\u0129nh l\u00e0 m\u1eabu bao g\u1ed3m v\u1eadt li\u1ec7u t\u1eeb nhi\u1ec1u \u0111\u1ed9 s\u00e2u \u2014 tr\u00ean c\u00f9ng, gi\u1eefa v\u00e0 d\u01b0\u1edbi c\u00f9ng \u2014 \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p theo t\u1ef7 l\u1ec7 th\u1ec3 t\u00edch c\u1ee7a h\u1ed9p ch\u1ee9a \u1edf m\u1ed7i m\u1ee9c.<\/p>\n\n\n\n<p>\u0110\u1ed1i v\u1edbi t\u00fai ho\u1eb7c h\u1ed9p nh\u1ecf, h\u00e3y c\u1eafm \u1ed1ng l\u1ea5y m\u1eabu (m\u1ed9t \u1ed1ng r\u1ed7ng c\u00f3 l\u1ed7 b\u00ean) th\u1eb3ng \u0111\u1ee9ng xu\u1ed1ng \u0111\u00e1y, sau \u0111\u00f3 l\u1ea5y m\u1eabu l\u00f5i. K\u1ebft h\u1ee3p c\u00e1c m\u1eabu l\u00f5i t\u1eeb \u00edt nh\u1ea5t ba v\u1ecb tr\u00ed kh\u00e1c nhau trong h\u1ed9p. \u0110\u1ed1i v\u1edbi \u0111\u1ed1ng v\u1eadt li\u1ec7u tr\u00ean b\u0103ng chuy\u1ec1n ho\u1eb7c s\u00e0n nh\u00e0, h\u00e3y l\u1ea5y m\u1eabu t\u1eeb l\u1edbp tr\u00ean c\u00f9ng, l\u1edbp gi\u1eefa v\u00e0 l\u1edbp \u0111\u00e1y b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng \u1ed1ng l\u1ea5y m\u1eabu thay v\u00ec d\u00f9ng x\u1ebbng x\u00fac b\u1ec1 m\u1eb7t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-2-sample-across-the-full-width-of-a-moving-stream\"><mark style=\"color:#0693e3\" class=\"has-inline-color\">2. L\u1ea5y m\u1eabu tr\u00ean to\u00e0n b\u1ed9 chi\u1ec1u r\u1ed9ng c\u1ee7a d\u00f2ng ch\u1ea3y<\/mark><\/h3>\n\n\n\n<p>M\u1eabu \u0111\u1ea1i di\u1ec7n nh\u1ea5t t\u1eeb d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t l\u00e0 m\u1eabu c\u1eaft ngang \u0111\u01b0\u1ee3c l\u1ea5y tr\u00ean to\u00e0n b\u1ed9 chi\u1ec1u r\u1ed9ng c\u1ee7a d\u00f2ng b\u1ed9t khi n\u00f3 r\u01a1i xu\u1ed1ng t\u1eeb b\u0103ng t\u1ea3i, c\u1eeda ra c\u1ee7a b\u1ed9 ph\u00e2n lo\u1ea1i ho\u1eb7c c\u1eeda x\u1ea3 c\u1ee7a m\u00e1y nghi\u1ec1n. \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ti\u00eau chu\u1ea9n v\u00e0ng - m\u1eabu \u0111\u01b0\u1ee3c l\u1ea5y theo c\u00e1ch n\u00e0y thu \u0111\u01b0\u1ee3c to\u00e0n b\u1ed9 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t (PSD) khi n\u00f3 tho\u00e1t ra kh\u1ecfi quy tr\u00ecnh, tr\u01b0\u1edbc khi b\u1ea5t k\u1ef3 s\u1ef1 ph\u00e2n t\u00e1ch n\u00e0o sau qu\u00e1 tr\u00ecnh x\u1eed l\u00fd x\u1ea3y ra. Vi\u1ec7c tri\u1ec3n khai th\u1ef1c t\u1ebf l\u00e0 s\u1eed d\u1ee5ng m\u1ed9t m\u00e1y c\u1eaft m\u1eabu di \u0111\u1ed9ng \u0111i qua nhi\u1ec1u l\u1ea7n tr\u00ean to\u00e0n b\u1ed9 chi\u1ec1u r\u1ed9ng c\u1ee7a d\u00f2ng v\u00e0 thu th\u1eadp m\u1eabu trung b\u00ecnh theo th\u1eddi gian.<\/p>\n\n\n\n<p>Vi\u1ec7c l\u1ea5y m\u1eabu tr\u1ef1c ti\u1ebfp t\u1eeb \u0111\u01b0\u1eddng \u1ed1ng ho\u1eb7c \u1ed1ng d\u1eabn \u2014 s\u1eed d\u1ee5ng \u0111\u1ea7u d\u00f2 g\u1eafn b\u00ean h\u00f4ng \u2014 k\u00e9m tin c\u1eady h\u01a1n v\u00ec c\u00e1c h\u1ea1t c\u00f3 k\u00edch th\u01b0\u1edbc kh\u00e1c nhau c\u00f3 v\u1eadn t\u1ed1c v\u00e0 qu\u1ef9 \u0111\u1ea1o kh\u00e1c nhau trong d\u00f2ng ch\u1ea3y. \u0110\u1ea7u d\u00f2 \u0111\u1eb7t t\u1ea1i m\u1ed9t \u0111i\u1ec3m c\u1ed1 \u0111\u1ecbnh trong \u0111\u01b0\u1eddng \u1ed1ng s\u1ebd \u01b0u ti\u00ean thu gi\u1eef c\u00e1c h\u1ea1t c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m kh\u00ed \u0111\u1ed9ng h\u1ecdc nh\u1ea5t \u0111\u1ecbnh h\u01a1n l\u00e0 m\u1ed9t m\u1eb7t c\u1eaft ngang \u0111\u1ea1i di\u1ec7n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-use-a-rotary-sample-divider-for-sub-sampling\"><mark style=\"color:#0693e3\" class=\"has-inline-color\">3. S\u1eed d\u1ee5ng b\u1ed9 chia m\u1eabu quay \u0111\u1ec3 l\u1ea5y m\u1eabu ph\u1ee5<\/mark><\/h3>\n\n\n\n<p>Sau khi thu th\u1eadp m\u1eabu l\u1edbn t\u1eeb nhi\u1ec1u v\u1ecb tr\u00ed, th\u00f4ng th\u01b0\u1eddng c\u1ea7n ph\u1ea3i gi\u1ea3m l\u01b0\u1ee3ng m\u1eabu xu\u1ed1ng m\u1ee9c c\u1ea7n thi\u1ebft cho vi\u1ec7c ph\u00e2n t\u00edch b\u1eb1ng thi\u1ebft b\u1ecb (v\u00e0i gam \u0111\u1ebfn v\u00e0i ch\u1ee5c gam \u0111\u1ed1i v\u1edbi h\u1ea7u h\u1ebft c\u00e1c thi\u1ebft b\u1ecb nhi\u1ec5u x\u1ea1 laser). Vi\u1ec7c l\u1ea5y m\u1eabu nh\u1ecf b\u1eb1ng tay t\u1eeb kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn s\u1ebd t\u1ea1o th\u00eam m\u1ed9t b\u01b0\u1edbc ph\u00e2n t\u00e1ch n\u1eefa \u2014 c\u00e1c h\u1ea1t m\u1ecbn trong kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn s\u1ebd ph\u00e2n b\u1ed1 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, v\u00e0 vi\u1ec7c l\u1ea5y m\u1eabu ng\u1eabu nhi\u00ean s\u1ebd kh\u00f4ng thu \u0111\u01b0\u1ee3c ch\u00fang m\u1ed9t c\u00e1ch c\u00e2n \u0111\u1ed1i.<\/p>\n\n\n\n<p>M\u00e1y chia m\u1eabu quay (m\u00e1y chia m\u1eabu ki\u1ec3u r\u00e3nh) chia b\u1ed9t th\u00e0nh c\u00e1c ph\u1ea7n b\u1eb1ng nhau m\u1ed9t c\u00e1ch nh\u1ea5t qu\u00e1n b\u1eb1ng c\u00e1ch ph\u00e2n ph\u1ed1i d\u00f2ng b\u1ed9t r\u01a1i xu\u1ed1ng qua nhi\u1ec1u m\u00e1ng thu gom. M\u1eabu ph\u1ee5 thu \u0111\u01b0\u1ee3c t\u1eeb m\u00e1y chia quay c\u00f3 gi\u00e1 tr\u1ecb th\u1ed1ng k\u00ea t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng m\u1eabu ch\u00ednh. Vi\u1ec7c l\u1ea5y m\u1eabu ph\u1ee5 th\u1ee7 c\u00f4ng b\u1eb1ng mu\u1ed7ng th\u00ec kh\u00f4ng, b\u1ea5t k\u1ec3 thao t\u00e1c c\u1ea9n th\u1eadn \u0111\u1ebfn \u0111\u00e2u.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-4-check-for-hard-vs-soft-agglomerates-before-choosing-dispersion-method\"><mark style=\"color:#0693e3\" class=\"has-inline-color\">4. Ki\u1ec3m tra xem c\u00f3 ph\u1ea3i l\u00e0 c\u00e1c c\u1ee5m h\u1ea1t c\u1ee9ng hay m\u1ec1m tr\u01b0\u1edbc khi ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00e1n.<\/mark><\/h3>\n\n\n\n<p>C\u00e1c c\u1ee5m h\u1ea1t trong b\u1ed9t kh\u00f4 \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i v\u00e0 c\u1ea7n x\u1eed l\u00fd kh\u00e1c nhau. C\u00e1c c\u1ee5m h\u1ea1t m\u1ec1m \u2014 \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i v\u1edbi nhau b\u1eb1ng l\u1ef1c h\u00fat t\u0129nh \u0111i\u1ec7n ho\u1eb7c l\u1ef1c van der Waals y\u1ebfu \u2014 c\u00f3 th\u1ec3 b\u1ecb ph\u00e1 v\u1ee1 b\u1edfi b\u1ed9 ph\u1eadn ph\u00e2n t\u00e1n kh\u00ed n\u00e9n c\u1ee7a thi\u1ebft b\u1ecb nhi\u1ec5u x\u1ea1 laser \u1edf \u00e1p su\u1ea5t ti\u00eau chu\u1ea9n (1-3 bar). C\u1ea7n ki\u1ec3m tra t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a b\u00e1o c\u00e1o t\u1eeb thi\u1ebft b\u1ecb \u1edf nhi\u1ec1u \u00e1p su\u1ea5t phun kh\u00e1c nhau: n\u1ebfu ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t (PSD) tr\u1edf n\u00ean m\u1ecbn h\u01a1n \u0111\u00e1ng k\u1ec3 khi \u00e1p su\u1ea5t ph\u00e2n t\u00e1n t\u0103ng t\u1eeb 1 \u0111\u1ebfn 3 bar, th\u00ec c\u00f3 s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c c\u1ee5m h\u1ea1t m\u1ec1m v\u00e0 c\u1ea7n th\u1ef1c hi\u1ec7n ph\u00e9p \u0111o \u1edf \u00e1p su\u1ea5t cao h\u01a1n.<\/p>\n\n\n\n<p>C\u00e1c kh\u1ed1i k\u1ebft t\u1ee5 c\u1ee9ng \u2014 \u0111\u01b0\u1ee3c gi\u1eef l\u1ea1i b\u1edfi qu\u00e1 tr\u00ecnh thi\u00eau k\u1ebft, li\u00ean k\u1ebft h\u00f3a h\u1ecdc ho\u1eb7c li\u00ean k\u1ebft c\u01a1 h\u1ecdc m\u1ea1nh \u2014 kh\u00f4ng th\u1ec3 b\u1ecb ph\u00e1 v\u1ee1 b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00e1n kh\u00ed n\u00e9n th\u00f4ng th\u01b0\u1eddng. Ch\u00fang c\u1ea7n \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng si\u00eau \u00e2m trong m\u00f4i tr\u01b0\u1eddng l\u1ecfng tr\u01b0\u1edbc khi \u0111o kh\u00f4, ho\u1eb7c b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p nhi\u1ec5u x\u1ea1 laser \u01b0\u1edbt c\u00f3 h\u1ed7 tr\u1ee3 si\u00eau \u00e2m. Vi\u1ec7c c\u1ed1 g\u1eafng \u0111o b\u1ed9t k\u1ebft t\u1ee5 c\u1ee9ng ch\u1ec9 b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00e1n kh\u00f4 s\u1ebd lu\u00f4n cho k\u1ebft qu\u1ea3 ph\u00e2n b\u1ed1 k\u00edch th\u01b0\u1edbc h\u1ea1t (PSD) th\u00f4 sai l\u1ec7ch.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-5-seal-samples-immediately-after-collection\"><mark style=\"color:#0693e3\" class=\"has-inline-color\">5. Ni\u00eam phong m\u1eabu ngay sau khi thu th\u1eadp.<\/mark><\/h3>\n\n\n\n<p>Nhi\u1ec1u lo\u1ea1i b\u1ed9t kh\u00f4 \u2014 t\u00e1 d\u01b0\u1ee3c d\u01b0\u1ee3c ph\u1ea9m, kho\u00e1ng ch\u1ea5t th\u1ef1c ph\u1ea9m, h\u00f3a ch\u1ea5t tinh khi\u1ebft h\u00fat \u1ea9m \u2014 h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m nhanh ch\u00f3ng t\u1eeb kh\u00f4ng kh\u00ed xung quanh. Ch\u1ec9 c\u1ea7n v\u00e0i ph\u00fat ti\u1ebfp x\u00fac v\u1edbi m\u00f4i tr\u01b0\u1eddng \u1ea9m \u01b0\u1edbt c\u0169ng \u0111\u1ee7 \u0111\u1ec3 t\u1ea1o ra \u0111\u1ed9 \u1ea9m b\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1ee3c, th\u00fac \u0111\u1ea9y s\u1ef1 v\u00f3n c\u1ee5c v\u00e0 l\u00e0m t\u0103ng gi\u00e1 tr\u1ecb D50 \u0111o \u0111\u01b0\u1ee3c. H\u1ed9p \u0111\u1ef1ng m\u1eabu c\u1ea7n \u0111\u01b0\u1ee3c ni\u00eam phong trong v\u00f2ng v\u00e0i gi\u00e2y sau khi thu th\u1eadp, ch\u1ee9 kh\u00f4ng ph\u1ea3i v\u00e0i ph\u00fat.<\/p>\n\n\n\n<p>S\u1eed d\u1ee5ng c\u00e1c h\u1ed9p \u0111\u1ef1ng kh\u00f4 r\u00e1o, \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch tr\u01b0\u1edbc. N\u1ebfu m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t \u1ea9m \u01b0\u1edbt (\u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i tr\u00ean 60%), h\u00e3y c\u00e2n nh\u1eafc chuy\u1ec3n m\u1eabu trong b\u00ecnh h\u00fat \u1ea9m di \u0111\u1ed9ng ho\u1eb7c s\u1eed d\u1ee5ng c\u00e1c h\u1ed9p k\u00edn \u0111\u01b0\u1ee3c b\u01a1m kh\u00ed nit\u01a1 cho b\u01b0\u1edbc chuy\u1ec3n m\u1eabu. Nh\u1eefng bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba n\u00e0y l\u00e0 th\u00f4ng l\u1ec7 trong c\u00e1c \u1ee9ng d\u1ee5ng d\u01b0\u1ee3c ph\u1ea9m v\u00e0 n\u00ean \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho b\u1ea5t k\u1ef3 lo\u1ea1i b\u1ed9t m\u1ecbn h\u00fat \u1ea9m n\u00e0o, b\u1ea5t k\u1ec3 ng\u00e0nh c\u00f4ng nghi\u1ec7p n\u00e0o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-6-mix-before-sub-sampling-but-gently\"><mark style=\"color:#0693e3\" class=\"has-inline-color\">6. Tr\u1ed9n nh\u1eb9 nh\u00e0ng tr\u01b0\u1edbc khi l\u1ea5y m\u1eabu ph\u1ee5.<\/mark><\/h3>\n\n\n\n<p>Ngay c\u1ea3 m\u1eabu t\u1ed5ng th\u1ec3 \u0111\u01b0\u1ee3c thu th\u1eadp \u0111\u00fang c\u00e1ch t\u1ea1i nhi\u1ec1u \u0111i\u1ec3m c\u0169ng s\u1ebd c\u00f3 m\u1ed9t s\u1ed1 s\u1ef1 kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t do c\u00e1c bi\u1ebfn \u0111\u1ed5i c\u1ee5c b\u1ed9. Tr\u1ed9n m\u1eabu t\u1ed5ng th\u1ec3 tr\u01b0\u1edbc khi l\u1ea5y m\u1eabu ph\u1ee5 s\u1ebd l\u00e0m gi\u1ea3m s\u1ef1 bi\u1ebfn \u0111\u1ed5i n\u00e0y. Tuy nhi\u00ean, ph\u01b0\u01a1ng ph\u00e1p tr\u1ed9n r\u1ea5t quan tr\u1ecdng: khu\u1ea5y m\u1ea1nh b\u1ed9t kh\u00f4 m\u1ecbn c\u00f3 th\u1ec3 t\u1ea1o ra \u0111i\u1ec7n t\u00edch t\u0129nh \u0111i\u1ec7n th\u00fac \u0111\u1ea9y s\u1ef1 v\u00f3n c\u1ee5c, v\u00e0 vi\u1ec7c \u0111\u1ea3o tr\u1ed9n trong m\u1ed9t th\u00f9ng ch\u1ee9a m\u1edf s\u1ebd l\u00e0m cho b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac v\u1edbi \u0111\u1ed9 \u1ea9m m\u00f4i tr\u01b0\u1eddng xung quanh.<\/p>\n\n\n\n<p>Ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb l\u00e0 l\u0103n nh\u1eb9 ho\u1eb7c \u00fap ng\u01b0\u1ee3c h\u1ed9p \u0111\u1ef1ng k\u00edn \u2013 20-30 chu k\u1ef3 l\u0103n l\u00e0 \u0111\u1ee7 cho h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i b\u1ed9t. Tr\u00e1nh c\u00e1c ph\u01b0\u01a1ng ph\u00e1p tr\u1ed9n n\u0103ng l\u01b0\u1ee3ng cao (m\u00e1y tr\u1ed9n xo\u00e1y, m\u00e1y l\u1eafc) t\u1ea1o ra \u0111i\u1ec7n t\u00edch ho\u1eb7c nhi\u1ec7t trong m\u1eabu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-7-record-the-sampling-protocol-as-part-of-the-psd-report\"><mark style=\"color:#0693e3\" class=\"has-inline-color\">7. Ghi l\u1ea1i quy tr\u00ecnh l\u1ea5y m\u1eabu nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a b\u00e1o c\u00e1o PSD.<\/mark><\/h3>\n\n\n\n<p>Trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd ch\u1eb7t ch\u1ebd (d\u01b0\u1ee3c ph\u1ea9m, th\u1ef1c ph\u1ea9m, \u0111i\u1ec7n t\u1eed), ph\u01b0\u01a1ng ph\u00e1p l\u1ea5y m\u1eabu c\u0169ng quan tr\u1ecdng nh\u01b0 k\u1ebft qu\u1ea3 \u0111o l\u01b0\u1eddng \u0111\u1ed1i v\u1edbi c\u00e1c quy\u1ebft \u0111\u1ecbnh ph\u00ea duy\u1ec7t s\u1ea3n ph\u1ea9m. M\u1ed9t b\u00e1o c\u00e1o PSD m\u00e0 kh\u00f4ng c\u00f3 quy tr\u00ecnh l\u1ea5y m\u1eabu \u0111\u01b0\u1ee3c ghi ch\u00e9p l\u1ea1i th\u00ec kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m to\u00e1n ho\u1eb7c tranh ch\u1ea5p m\u1ed9t c\u00e1ch c\u00f3 \u00fd ngh\u0129a. N\u1ebfu kh\u00e1ch h\u00e0ng khi\u1ebfu n\u1ea1i v\u1ec1 k\u1ebft qu\u1ea3, kh\u00f4ng c\u00f3 c\u00e1ch n\u00e0o \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 xem nguy\u00ean nh\u00e2n g\u00e2y ra s\u1ef1 sai l\u1ec7ch l\u00e0 do ph\u00e9p \u0111o hay do ph\u01b0\u01a1ng ph\u00e1p l\u1ea5y m\u1eabu.<\/p>\n\n\n\n<p>Ngay c\u1ea3 trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00f4ng \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd ch\u1eb7t ch\u1ebd, vi\u1ec7c ghi l\u1ea1i quy tr\u00ecnh l\u1ea5y m\u1eabu cho ph\u00e9p so s\u00e1nh k\u1ebft qu\u1ea3 gi\u1eefa c\u00e1c \u0111\u1ee3t s\u1ea3n xu\u1ea5t, ca l\u00e0m vi\u1ec7c v\u00e0 c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t kh\u00e1c nhau. N\u1ebfu d\u1eef li\u1ec7u PSD thay \u0111\u1ed5i b\u1ea5t ng\u1edd, quy tr\u00ecnh \u0111\u01b0\u1ee3c ghi ch\u00e9p l\u1ea1i cho ph\u00e9p \u0111i\u1ec1u tra x\u00e1c \u0111\u1ecbnh xem li\u1ec7u vi\u1ec7c l\u1ea5y m\u1eabu c\u00f3 thay \u0111\u1ed5i hay kh\u00f4ng, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 quy tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-sampling-protocol-checklist-for-dry-milled-powder\"><mark class=\"has-inline-color has-ast-global-color-0-color\">Danh s\u00e1ch ki\u1ec3m tra quy tr\u00ecnh l\u1ea5y m\u1eabu cho b\u1ed9t nghi\u1ec1n kh\u00f4<\/mark><\/h3>\n\n\n\n<p>\u2022 \u0110i\u1ec3m thu gom: T\u1ed1i thi\u1ec3u 3 v\u1ecb tr\u00ed (tr\u00ean, gi\u1eefa, d\u01b0\u1edbi) t\u1eeb c\u00e1c th\u00f9ng ch\u1ee9a c\u1ed1 \u0111\u1ecbnh; c\u1eaft ngang ho\u00e0n to\u00e0n t\u1eeb c\u00e1c d\u00f2ng ch\u1ea3y.<br>\u2022 D\u1ee5ng c\u1ee5: \u1ed0ng l\u1ea5y m\u1eabu ho\u1eb7c d\u1ee5ng c\u1ee5 l\u1ea5y m\u1eabu d\u1ea1ng \u1ed1ng cho c\u00e1c th\u00f9ng ch\u1ee9a; d\u1ee5ng c\u1ee5 c\u1eaft di \u0111\u1ed9ng cho c\u00e1c d\u00f2ng su\u1ed1i. Kh\u00f4ng d\u00f9ng g\u00e1o m\u00fac b\u1ec1 m\u1eb7t.<br>\u2022 L\u1ea5y m\u1eabu ph\u1ee5: B\u1ed9 chia m\u1eabu d\u1ea1ng r\u00e3nh quay gi\u00fap gi\u1ea3m l\u01b0\u1ee3ng m\u1eabu th\u00f4 xu\u1ed1ng c\u00f2n l\u01b0\u1ee3ng ph\u00e2n t\u00edch. Kh\u00f4ng c\u1ea7n m\u00fac m\u1eabu b\u1eb1ng tay.<br>\u2022 Ki\u1ec3m tra s\u1ef1 k\u1ebft t\u1ee5: Ki\u1ec3m tra PSD \u1edf \u00e1p su\u1ea5t ph\u00e2n t\u00e1n 1 bar v\u00e0 3 bar \u2014 n\u1ebfu D50 thay \u0111\u1ed5i nhi\u1ec1u h\u01a1n 10%, c\u00f3 s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c c\u1ee5m h\u1ea1t m\u1ec1m; s\u1eed d\u1ee5ng \u00e1p su\u1ea5t 3 bar.<br>\u2022 Ni\u00eam phong: Ni\u00eam phong h\u1ed9p \u0111\u1ef1ng m\u1eabu trong v\u00f2ng 30 gi\u00e2y sau khi l\u1ea5y m\u1eabu. S\u1eed d\u1ee5ng h\u1ed9p \u0111\u1ef1ng kh\u00f4, \u0111\u00e3 \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch tr\u01b0\u1edbc.<br>\u2022 Tr\u1ed9n: L\u1eafc nh\u1eb9 20-30 l\u1ea7n trong h\u1ed9p k\u00edn tr\u01b0\u1edbc khi l\u1ea5y m\u1eabu ph\u1ee5.<br>T\u00e0i li\u1ec7u: Ghi l\u1ea1i v\u1ecb tr\u00ed l\u1ea5y m\u1eabu, th\u1eddi gian, ng\u01b0\u1eddi v\u1eadn h\u00e0nh, lo\u1ea1i v\u1eadt ch\u1ee9a v\u00e0 \u00e1p su\u1ea5t ph\u00e2n t\u00e1n \u0111\u00e3 s\u1eed d\u1ee5ng.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-mill-and-classifier-performance-affects-sampling-reliability\"><mark class=\"has-inline-color has-ast-global-color-0-color\">\u1ea2nh h\u01b0\u1edfng c\u1ee7a hi\u1ec7u su\u1ea5t m\u00e1y nghi\u1ec1n v\u00e0 m\u00e1y ph\u00e2n lo\u1ea1i \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady c\u1ee7a qu\u00e1 tr\u00ecnh l\u1ea5y m\u1eabu<\/mark><\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/talc-jet-milling-1024x768.webp\" alt=\"nghi\u1ec1n b\u1eb1ng tia b\u1ed9t talc\" class=\"wp-image-16708\" style=\"aspect-ratio:1.3333401151553377;width:798px;height:auto\" srcset=\"https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/talc-jet-milling-1024x768.webp 1024w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/talc-jet-milling-300x225.webp 300w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/talc-jet-milling-768x576.webp 768w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/talc-jet-milling-1536x1152.webp 1536w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/talc-jet-milling-2048x1536.webp 2048w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/talc-jet-milling-16x12.webp 16w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2026\/04\/talc-jet-milling-600x450.webp 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>M\u1ed9t s\u1ed1 bi\u1ebfn thi\u00ean v\u1ec1 k\u00edch th\u01b0\u1edbc h\u1ea1t (PSD) do l\u1ea5y m\u1eabu th\u1ef1c ch\u1ea5t l\u00e0 bi\u1ebfn thi\u00ean th\u1ef1c s\u1ef1 c\u1ee7a quy tr\u00ecnh t\u1eeb m\u1ea1ch nghi\u1ec1n. M\u1ed9t h\u1ec7 th\u1ed1ng nghi\u1ec1n t\u1ea1o ra c\u00e1c m\u1ebb s\u1ea3n ph\u1ea9m c\u00f3 PSD h\u1eb9p v\u00e0 nh\u1ea5t qu\u00e1n s\u1ebd c\u1ea7n \u00edt m\u1eabu h\u01a1n, t\u1ea7n su\u1ea5t l\u1ea5y m\u1eabu \u00edt h\u01a1n, v\u00e0 t\u1ea1o ra c\u00e1c m\u1eabu th\u1ef1c s\u1ef1 \u0111\u1ea1i di\u1ec7n cho s\u1ea3n ph\u1ea9m v\u00ec s\u1ef1 bi\u1ebfn thi\u00ean PSD trong kh\u00f4ng gian b\u00ean trong m\u1ebb s\u1ea3n ph\u1ea9m l\u00e0 nh\u1ecf.<\/p>\n\n\n\n<p>M\u00e1y nghi\u1ec1n ho\u1eb7c m\u00e1y ph\u00e2n lo\u1ea1i ho\u1ea1t \u0111\u1ed9ng v\u1edbi t\u1ed1c \u0111\u1ed9 c\u1ea5p li\u1ec7u kh\u00f4ng \u1ed5n \u0111\u1ecbnh, b\u00e1nh xe ph\u00e2n lo\u1ea1i b\u1ecb m\u00f2n ho\u1eb7c \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed dao \u0111\u1ed9ng s\u1ebd t\u1ea1o ra c\u00e1c l\u00f4 s\u1ea3n ph\u1ea9m kh\u00e1c nhau. Kh\u00f4ng c\u00f3 quy tr\u00ecnh l\u1ea5y m\u1eabu n\u00e0o c\u00f3 th\u1ec3 l\u00e0m cho m\u1ed9t quy tr\u00ecnh bi\u1ebfn \u0111\u1ed5i tr\u00f4ng nh\u1ea5t qu\u00e1n. Khi vi\u1ec7c l\u1ea5y m\u1eabu cho th\u1ea5y s\u1ef1 bi\u1ebfn \u0111\u1ed5i b\u1ea5t ng\u1edd, c\u00e2u h\u1ecfi ch\u1ea9n \u0111o\u00e1n \u0111\u1ea7u ti\u00ean c\u1ea7n \u0111\u1eb7t ra l\u00e0 li\u1ec7u s\u1ef1 bi\u1ebfn \u0111\u1ed5i \u0111\u00f3 n\u1eb1m \u1edf quy tr\u00ecnh nghi\u1ec1n hay \u1edf k\u1ef9 thu\u1eadt l\u1ea5y m\u1eabu. \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi ph\u1ea3i so s\u00e1nh c\u00e1c m\u1eabu \u0111\u01b0\u1ee3c l\u1ea5y t\u1ea1i \u0111\u1ea7u ra c\u1ee7a m\u00e1y nghi\u1ec1n v\u1edbi c\u00e1c m\u1eabu \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb th\u00f9ng ch\u1ee9a s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng. N\u1ebfu c\u00e1c m\u1eabu \u0111\u1ea7u ra c\u1ee7a m\u00e1y nghi\u1ec1n cho th\u1ea5y k\u00edch th\u01b0\u1edbc h\u1ea1t ph\u00e2n b\u1ed1 (PSD) nh\u1ea5t qu\u00e1n nh\u01b0ng c\u00e1c m\u1eabu s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng cho th\u1ea5y s\u1ef1 bi\u1ebfn \u0111\u1ed5i l\u1edbn, th\u00ec ngu\u1ed3n g\u1ed1c l\u00e0 do s\u1ef1 ph\u00e2n t\u00e1ch sau qu\u00e1 tr\u00ecnh x\u1eed l\u00fd trong qu\u00e1 tr\u00ecnh b\u1ea3o qu\u1ea3n ho\u1eb7c v\u1eadn chuy\u1ec3n, ch\u1ee9 kh\u00f4ng ph\u1ea3i do quy tr\u00ecnh nghi\u1ec1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-questions-about-sampling-from-an-epic-powder-milling-line\"><mark class=\"has-inline-color has-ast-global-color-0-color\">B\u1ea1n c\u00f3 c\u00e2u h\u1ecfi n\u00e0o v\u1ec1 vi\u1ec7c l\u1ea5y m\u1eabu t\u1eeb d\u00e2y chuy\u1ec1n nghi\u1ec1n b\u1ed9t EPIC kh\u00f4ng?<\/mark><\/h3>\n\n\n\n<p><a href=\"https:\/\/www.jet-mills.com\/vi\/about-us\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"EPIC\">B\u1ed9t EPIC<\/a> C\u00e1c k\u1ef9 s\u01b0 \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang t\u00f4i c\u00f3 th\u1ec3 t\u01b0 v\u1ea5n v\u1ec1 thi\u1ebft k\u1ebf quy tr\u00ecnh l\u1ea5y m\u1eabu cho c\u00e1c v\u1eadt li\u1ec7u v\u00e0 lo\u1ea1i m\u00e1y nghi\u1ec1n c\u1ee5 th\u1ec3. \u0110i\u1ec1u n\u00e0y bao g\u1ed3m c\u00e1c \u0111i\u1ec3m l\u1ea5y m\u1eabu \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb, t\u1ea7n su\u1ea5t l\u1ea5y m\u1eabu v\u00e0 c\u00e0i \u0111\u1eb7t \u0111\u1ed9 ph\u00e2n t\u00e1n cho ph\u00e2n t\u00edch nhi\u1ec5u x\u1ea1 laser. Ch\u00fang t\u00f4i c\u0169ng c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n \u0111\u00e1nh gi\u00e1 xem s\u1ef1 bi\u1ebfn \u0111\u1ed5i PSD \u0111\u1ebfn t\u1eeb qu\u00e1 tr\u00ecnh nghi\u1ec1n hay t\u1eeb vi\u1ec7c l\u1ea5y m\u1eabu.<\/p>\n\n\n\n<p><a href=\"\/vi\/contact-us\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"k\u1ebft n\u1ed1i\">Li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i<\/a> V\u1edbi v\u1eadt li\u1ec7u, m\u1ee5c ti\u00eau gia c\u00f4ng v\u00e0 s\u1ef1 bi\u1ebfn thi\u00ean k\u00edch th\u01b0\u1edbc h\u1ea1t (PSD) c\u1ee7a b\u1ea1n, ch\u00fang t\u00f4i s\u1ebd \u0111\u01b0a ra khuy\u1ebfn ngh\u1ecb c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<p>\u0110\u1eb7t c\u00e2u h\u1ecfi k\u1ef9 thu\u1eadt: <a href=\"https:\/\/www.jet-mills.com\/vi\/contact-us\/\">www.jet-mills.com\/contact-us<\/a><br>Kh\u00e1m ph\u00e1 d\u00f2ng s\u1ea3n ph\u1ea9m m\u00e1y m\u00e0i kh\u00ed n\u00e9n c\u1ee7a ch\u00fang t\u00f4i: <a href=\"http:\/\/www.jet-mills.com\/vi\/\">www.jet-mills.com<\/a><\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y nghi\u1ec1n kh\u00ed n\u00e9n: Nguy\u00ean l\u00fd nghi\u1ec1n b\u1eb1ng n\u0103ng l\u01b0\u1ee3ng ch\u1ea5t l\u1ecfng\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/iIc-0Bb5zpI?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-epic-powder\"><mark style=\"color:#cf2e2e\" class=\"has-inline-color\">B\u1ed9t s\u1eed thi<\/mark><\/h2>\n\n\n\n<p>T\u1ea1i <a href=\"https:\/\/www.jet-mills.com\/vi\/products\/\">B\u1ed9t s\u1eed thi<\/a>, Ch\u00fang t\u00f4i cung c\u1ea5p nhi\u1ec1u lo\u1ea1i thi\u1ebft b\u1ecb v\u00e0 gi\u1ea3i ph\u00e1p t\u00f9y ch\u1ec9nh \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n. \u0110\u1ed9i ng\u0169 c\u1ee7a ch\u00fang t\u00f4i c\u00f3 h\u01a1n 20 n\u0103m kinh nghi\u1ec7m trong l\u0129nh v\u1ef1c ch\u1ebf bi\u1ebfn c\u00e1c lo\u1ea1i b\u1ed9t kh\u00e1c nhau. Epic Powder chuy\u00ean v\u1ec1 c\u00f4ng ngh\u1ec7 ch\u1ebf bi\u1ebfn b\u1ed9t m\u1ecbn cho ng\u00e0nh c\u00f4ng nghi\u1ec7p kho\u00e1ng s\u1ea3n, h\u00f3a ch\u1ea5t, th\u1ef1c ph\u1ea9m, d\u01b0\u1ee3c ph\u1ea9m, v.v.<\/p>\n\n\n\n<p><a href=\"\/vi\/contact-us\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"k\u1ebft n\u1ed1i\">Li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i<\/a> Li\u00ean h\u1ec7 ngay h\u00f4m nay \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed v\u00e0 gi\u1ea3i ph\u00e1p ph\u00f9 h\u1ee3p!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-default\" \/>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized is-style-rounded\"><img loading=\"lazy\" decoding=\"async\" width=\"721\" height=\"721\" src=\"https:\/\/www.jet-mills.com\/wp-content\/uploads\/2025\/11\/1634113936327.webp\" alt=\"1634113936327\" class=\"wp-image-16215\" style=\"width:150px;height:150px\" srcset=\"https:\/\/www.jet-mills.com\/wp-content\/uploads\/2025\/11\/1634113936327.webp 721w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2025\/11\/1634113936327-300x300.webp 300w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2025\/11\/1634113936327-100x100.webp 100w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2025\/11\/1634113936327-12x12.webp 12w, https:\/\/www.jet-mills.com\/wp-content\/uploads\/2025\/11\/1634113936327-600x600.webp 600w\" sizes=\"(max-width: 721px) 100vw, 721px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote has-text-align-center is-style-large is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"has-medium-font-size\">\u201cC\u1ea3m \u01a1n b\u1ea1n \u0111\u00e3 \u0111\u1ecdc. T\u00f4i hy v\u1ecdng b\u00e0i vi\u1ebft c\u1ee7a t\u00f4i h\u1eefu \u00edch. Vui l\u00f2ng \u0111\u1ec3 l\u1ea1i b\u00ecnh lu\u1eadn b\u00ean d\u01b0\u1edbi. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 li\u00ean h\u1ec7 v\u1edbi \u0111\u1ea1i di\u1ec7n ch\u0103m s\u00f3c kh\u00e1ch h\u00e0ng tr\u1ef1c tuy\u1ebfn c\u1ee7a EPIC Powder. <strong><mark style=\"color:#ff6900\" class=\"has-inline-color\">Zelda<\/mark><\/strong> cho b\u1ea5t k\u1ef3 y\u00eau c\u1ea7u th\u00eam n\u00e0o.\u201d<\/p>\n<cite>                                                                                                                                            \u2014 <strong><mark style=\"color:#ff6900\" class=\"has-inline-color\">Emily Tr\u1ea7n<\/mark><\/strong>, <em>K\u1ef9 s\u01b0<\/em><\/cite><\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-default\" \/>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f14468-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"14468\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/vi\/wp-json\/wp\/v2\/posts\/16714#wpcf7-f14468-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/vi\/wp-json\/wp\/v2\/posts\/16714#wpcf7-f14468-o1\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"14468\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.5\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"zh_CN\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f14468-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/><input type=\"hidden\" name=\"_wpcf7_recaptcha_response\" value=\"\" \/>\n<\/fieldset>\n<div class=\"keen-form\">\n\t<div class=\"one-half\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"T\u00ean c\u1ee7a b\u1ea1n*\" value=\"\" type=\"text\" name=\"your-name\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half last\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Email c\u1ee7a b\u1ea1n*\" value=\"\" type=\"email\" name=\"your-email\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"pnone\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-tel\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"\u0110i\u1ec7n tho\u1ea1i ho\u1eb7c Whatsapp c\u1ee7a b\u1ea1n*\" value=\"\" type=\"tel\" name=\"pnone\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div class=\"one-half last\">\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-subject\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text\" aria-invalid=\"false\" placeholder=\"C\u00f4ng ty c\u1ee7a b\u1ea1n\" value=\"\" type=\"text\" name=\"your-subject\" \/><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div>\n\t\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-message\"><textarea cols=\"40\" rows=\"3\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea\" aria-invalid=\"false\" placeholder=\"Tin nh\u1eafn c\u1ee7a b\u1ea1n\" name=\"your-message\"><\/textarea><\/span>\n\t\t<\/p>\n\t<\/div>\n\t<div>\n\t\t<p><span class=\"wpcf7-form-control-wrap kc_captcha\" data-name=\"kc_captcha\"><span class=\"wpcf7-form-control wpcf7-radio\"><span class=\"captcha-image\" ><span class=\"cf7ic_instructions\">H\u00e3y ch\u1ee9ng minh b\u1ea1n l\u00e0 ng\u01b0\u1eddi 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