{"id":9849,"date":"2026-02-24T15:11:45","date_gmt":"2026-02-24T07:11:45","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/astm-d1922-2\/"},"modified":"2026-04-16T09:53:05","modified_gmt":"2026-04-16T01:53:05","slug":"astm-d1922","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/vi\/standard\/astm-d1922\/","title":{"rendered":"Ti\u00eau chu\u1ea9n ASTMD1922"},"content":{"rendered":"<h2 class=\"wp-block-heading\">\u0110\u1ed9 b\u1ec1n r\u00e1ch Elmendorf: T\u1ea1i sao ti\u00eau chu\u1ea9n ASTM D1922 l\u1ea1i quan tr\u1ecdng?<\/h2>\n\n\n\n<p><strong data-start=\"842\" data-end=\"871\">\u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a Elmendorf<\/strong> \u0110\u00e2y l\u00e0 m\u1ed9t t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u01a1 b\u1ea3n \u0111\u1ed1i v\u1edbi c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 polyethylene, polypropylene, polyester v\u00e0 c\u00e1c lo\u1ea1i m\u00e0ng kh\u00e1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong bao b\u00ec linh ho\u1ea1t. Ti\u00eau chu\u1ea9n ASTM D1922 quy \u0111\u1ecbnh m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p nh\u1ea5t qu\u00e1n v\u00e0 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 t\u00ednh ch\u1ea5t n\u00e0y.<\/p>\n\n\n\n<p>\u00dd ngh\u0129a c\u1ee7a ti\u00eau chu\u1ea9n ASTM D1922 n\u1eb1m \u1edf kh\u1ea3 n\u0103ng c\u1ee7a n\u00f3 trong vi\u1ec7c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong data-start=\"1163\" data-end=\"1189\">\u0110o \u0111\u1ed9 b\u1ec1n c\u1ee7a n\u01b0\u1edbc m\u1eaft<\/strong> c\u1ea3 theo h\u01b0\u1edbng d\u1ecdc v\u00e0 ngang.<\/li>\n\n\n\n<li>Ti\u1ebft l\u1ed9 v\u1eadt li\u1ec7u <strong data-start=\"1251\" data-end=\"1265\">t\u00ednh d\u1ecb h\u01b0\u1edbng<\/strong>, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong c\u00e1c lo\u1ea1i phim \u0111\u1ecbnh h\u01b0\u1edbng.<\/li>\n\n\n\n<li>M\u00f4 ph\u1ecfng \u0111i\u1ec1u ki\u1ec7n r\u00e1ch t\u01b0\u01a1ng t\u1ef1 nh\u01b0 khi s\u1eed d\u1ee5ng bao b\u00ec th\u1ef1c t\u1ebf.<\/li>\n<\/ul>\n\n\n\n<p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho vi\u1ec7c so s\u00e1nh. <strong data-start=\"1411\" data-end=\"1454\">Kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00e1ch gi\u1eefa c\u00e1c l\u00f4 v\u1eadt li\u1ec7u<\/strong>, \u0110\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a phim trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 x\u00e1c minh c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 cung c\u1ea5p.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ASTM D1922<\/h2>\n\n\n\n<p>ASTM D1922 \u0111o l\u01b0\u1eddng s\u1ef1 lan truy\u1ec1n v\u1ebft r\u00e1ch b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t <strong data-start=\"1632\" data-end=\"1671\">M\u00e1y th\u1eed \u0111\u1ed9 r\u00e1ch Elmendorf ki\u1ec3u \u0111\u1ed3ng h\u1ed3 l\u1eafc<\/strong>. M\u1eabu \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1eaft s\u1eb5n \u0111\u01b0\u1ee3c k\u1eb9p gi\u1eefa m\u1ed9t c\u00e1nh tay c\u1ed1 \u0111\u1ecbnh v\u00e0 m\u1ed9t c\u00e1nh tay \u0111ung \u0111\u01b0a c\u00f3 th\u1ec3 di chuy\u1ec3n. Khi th\u1ea3 ra, c\u00e1nh tay \u0111ung \u0111\u01b0a s\u1ebd x\u00e9 m\u1eabu d\u1ecdc theo v\u1ebft c\u1eaft s\u1eb5n. N\u0103ng l\u01b0\u1ee3ng m\u1ea5t \u0111i trong qu\u00e1 tr\u00ecnh n\u00e0y, \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n qua qu\u1ef9 \u0111\u1ea1o c\u1ee7a c\u00e1nh tay \u0111ung \u0111\u01b0a, t\u01b0\u01a1ng \u1ee9ng v\u1edbi \u0111\u1ed9 b\u1ec1n x\u00e9 c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n\n\n\n<p>B\u00e0i ki\u1ec3m tra n\u00e0y cung c\u1ea5p m\u1ed9t k\u1ebft qu\u1ea3 \u0111\u1ecbnh l\u01b0\u1ee3ng v\u1ec1 <strong data-start=\"1986\" data-end=\"2021\">L\u1ef1c k\u00e9o trong milinewton (mN)<\/strong> ho\u1eb7c <strong data-start=\"2025\" data-end=\"2045\">l\u1ef1c gram (gf)<\/strong>, T\u00f9y thu\u1ed9c v\u00e0o c\u1ea5u h\u00ecnh c\u1ee7a thi\u1ebft b\u1ecb. Vi\u1ec7c xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 sau l\u00e0 r\u1ea5t quan tr\u1ecdng:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong data-start=\"2133\" data-end=\"2157\">H\u01b0\u1edbng c\u1ee7a m\u1eabu<\/strong> (h\u01b0\u1edbng d\u1ecdc so v\u1edbi h\u01b0\u1edbng ngang)<\/li>\n\n\n\n<li><strong data-start=\"2195\" data-end=\"2217\">\u0110\u1ed9 d\u00e0y m\u1eabu<\/strong>, c\u1ea7n \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o nh\u01b0ng kh\u00f4ng c\u00f3 m\u1ed1i quan h\u1ec7 tr\u1ef1c ti\u1ebfp v\u1edbi l\u1ef1c k\u00e9o.<\/li>\n\n\n\n<li><strong data-start=\"2293\" data-end=\"2312\">\u0110i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m<\/strong>, ch\u1eb3ng h\u1ea1n nh\u01b0 nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m, ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c h\u01b0\u1edbng d\u1eabn c\u1ee7a ASTM (th\u01b0\u1eddng l\u00e0 23 \u00b1 2\u00b0C v\u00e0 50 \u00b1 10% RH).<\/li>\n<\/ul>\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<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe title=\"C\u00e1ch th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m Elmendort tr\u00ean m\u1eabu m\u00e0ng nh\u1ef1a\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/oo5j21g_thM?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><\/div>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a m\u00e0ng nh\u1ef1a: T\u00ednh \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf<\/h2>\n\n\n\n<p>M\u00e0ng nh\u1ef1a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u00f3ng g\u00f3i th\u1ef1c ph\u1ea9m, bao b\u00ec d\u01b0\u1ee3c ph\u1ea9m v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p th\u01b0\u1eddng ph\u1ea3i ch\u1ecbu l\u1ef1c c\u01a1 h\u1ecdc. M\u1ed9t m\u00e0ng nh\u1ef1a c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng k\u00e9m <strong data-start=\"2619\" data-end=\"2636\">\u0110\u1ed9 b\u1ec1n k\u00e9o<\/strong> c\u00f3 th\u1ec3 b\u1ecb r\u00e1ch trong qu\u00e1 tr\u00ecnh n\u1ea1p, \u0111\u00f3ng g\u00f3i ho\u1eb7c v\u1eadn chuy\u1ec3n, d\u1eabn \u0111\u1ebfn:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u1ea5t m\u00e1t s\u1ea3n ph\u1ea9m<\/li>\n\n\n\n<li>Gi\u1ea3m th\u1eddi h\u1ea1n s\u1eed d\u1ee5ng<\/li>\n\n\n\n<li>Thi\u1ec7t h\u1ea1i v\u1ec1 danh ti\u1ebfng th\u01b0\u01a1ng hi\u1ec7u<\/li>\n<\/ul>\n\n\n\n<p>Ti\u00eau chu\u1ea9n ASTM D1922 cho ph\u00e9p c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n v\u1eadt li\u1ec7u v\u00e0 chuy\u00ean gia ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng (QC) <strong data-start=\"2837\" data-end=\"2870\">Ch\u1ecdn c\u00e1c lo\u1ea1i phim b\u1ec1n nh\u1ea5t<\/strong> cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. N\u00f3 c\u0169ng gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t bao b\u00ec x\u00e1c \u0111\u1ecbnh c\u00e1c ng\u01b0\u1ee1ng hi\u1ec7u su\u1ea5t ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n s\u1ea3n ph\u1ea9m m\u1edbi.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Vai tr\u00f2 c\u1ee7a m\u00e1y th\u1eed \u0111\u1ed9 r\u00e1ch Elmendorf trong ti\u00eau chu\u1ea9n ASTM D1922<\/h2>\n\n\n\n<p>M\u1ed8T <strong data-start=\"3067\" data-end=\"3092\">M\u00e1y th\u1eed \u0111\u1ed9 r\u00e1ch Elmendorf<\/strong> l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu trong ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m n\u00e0y. N\u00f3 cung c\u1ea5p:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong data-start=\"3157\" data-end=\"3186\">C\u01a1 ch\u1ebf th\u1eed nghi\u1ec7m c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i<\/strong>, v\u1edbi n\u0103ng l\u01b0\u1ee3ng dao \u0111\u1ed9ng \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n theo h\u01b0\u1edbng d\u1eabn c\u1ee7a ASTM<\/li>\n\n\n\n<li><strong data-start=\"3244\" data-end=\"3272\">Hi\u1ec3n th\u1ecb s\u1ed1 ch\u00ednh x\u00e1c<\/strong>, gi\u1ea3m thi\u1ec3u sai s\u00f3t trong qu\u00e1 tr\u00ecnh gi\u1ea3i th\u00edch<\/li>\n\n\n\n<li><strong data-start=\"3310\" data-end=\"3333\">K\u1eb9p ch\u1eb7t \u0111\u1ec1u \u0111\u1eb7n<\/strong>, \u0110\u1ea3m b\u1ea3o \u0111\u01b0\u1eddng r\u00e1ch \u0111\u1ed3ng \u0111\u1ec1u.<\/li>\n<\/ul>\n\n\n\n<p>Cell Instruments cung c\u1ea5p <strong data-start=\"3393\" data-end=\"3425\">M\u00e1y th\u1eed \u0111\u1ed9 r\u00e1ch Elmendorf SLD-01<\/strong>, m\u1ed9t gi\u1ea3i ph\u00e1p \u0111\u00e1ng tin c\u1eady cho c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m v\u00e0 khu v\u1ef1c s\u1ea3n xu\u1ea5t. SLD-01 tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n. <strong data-start=\"3516\" data-end=\"3530\">Ti\u00eau chu\u1ea9n ASTMD1922<\/strong> V\u00e0 <strong data-start=\"3535\" data-end=\"3549\">ISO 6383-2<\/strong>, v\u1edbi s\u1ef1 tham gia c\u1ee7a:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u00e1c kh\u1ed1i c\u00e2n c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh cho c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u kh\u00e1c nhau<\/li>\n\n\n\n<li>M\u00e0n h\u00ecnh hi\u1ec3n th\u1ecb k\u1ebft qu\u1ea3 k\u1ef9 thu\u1eadt s\u1ed1 c\u00f3 kh\u1ea3 n\u0103ng ghi l\u1ea1i d\u1eef li\u1ec7u<\/li>\n\n\n\n<li>C\u1ea5u tr\u00fac ch\u1eafc ch\u1eafn \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i.<\/li>\n<\/ul>\n\n\n\n<p>Thi\u1ebft b\u1ecb n\u00e0y l\u00e0 l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng cho <strong data-start=\"3770\" data-end=\"3819\">Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng trong s\u1ea3n xu\u1ea5t m\u00e0ng nh\u1ef1a<\/strong>, \u0110\u00e1nh gi\u00e1 bao b\u00ec linh ho\u1ea1t v\u00e0 c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m nghi\u00ean c\u1ee9u ph\u00e2n t\u00edch h\u00e0nh vi c\u1ee7a polymer d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a \u1ee9ng su\u1ea5t c\u01a1 h\u1ecdc.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u1ef1a ch\u1ecdn m\u00e1y \u0111o h\u1ec7 s\u1ed1 ma s\u00e1t ph\u00f9 h\u1ee3p<br>\n<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.packqc.com\/vi\/\">C\u00f4ng ty TNHH Cell Instruments<\/a> chuy\u00ean v\u1ec1 <strong data-start=\"4020\" data-end=\"4069\">Gi\u1ea3i ph\u00e1p ki\u1ec3m tra v\u1eadt li\u1ec7u phim v\u00e0 bao b\u00ec<\/strong>. V\u1edbi nhi\u1ec1u n\u0103m kinh nghi\u1ec7m ph\u1ee5c v\u1ee5 c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 d\u01b0\u1ee3c ph\u1ea9m, th\u1ef1c ph\u1ea9m, \u0111i\u1ec7n t\u1eed v\u00e0 bao b\u00ec y t\u1ebf, ch\u00fang t\u00f4i hi\u1ec3u r\u00f5 nhu c\u1ea7u v\u1ec1 <strong data-start=\"4211\" data-end=\"4241\">D\u1eef li\u1ec7u ch\u00ednh x\u00e1c, c\u00f3 th\u1ec3 t\u00e1i t\u1ea1o.<\/strong>.<\/p>\n\n\n\n<p>Ch\u00fang t\u00f4i h\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng c\u1ee7a m\u00ecnh v\u1edbi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong data-start=\"4276\" data-end=\"4308\">C\u00e1c thi\u1ebft b\u1ecb hi\u1ec7u su\u1ea5t cao<\/strong>, gi\u1ed1ng nh\u01b0 SLD-01<\/li>\n\n\n\n<li><strong data-start=\"4328\" data-end=\"4353\">C\u00e1c thi\u1ebft l\u1eadp ki\u1ec3m th\u1eed t\u00f9y ch\u1ec9nh<\/strong> cho phim chuy\u00ean d\u1ee5ng<\/li>\n\n\n\n<li><strong data-start=\"4378\" data-end=\"4413\">T\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 t\u00edch h\u1ee3p d\u1eef li\u1ec7u<\/strong> \u0110\u1ec3 t\u1ed1i \u01b0u h\u00f3a quy tr\u00ecnh ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng (QC)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\n\t\t\t\tLi\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u00f4i Nh\u1eadn gi\u1ea3i ph\u00e1p th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D1894\t\t\t\t<\/h2>\n\n\n\n<p>Hi\u1ec3u v\u00e0 \u00e1p d\u1ee5ng <strong data-start=\"5050\" data-end=\"5064\"><a href=\"https:\/\/store.astm.org\/d1922-23.html?_gl=1*xkuj15*_gcl_aw*R0NMLjE3Njg3ODk3MzcuQ2owS0NRaUFwckxMQmhDTUFSSXNBRURoZFBmZnpaMHVBMGMtdjB4RWdqR0hGSWVCaVZjeTJBM3RfRHV0ajduOVh3QlJuQUVlbGdZOU00TWFBcWlSRUFMd193Y0I.*_gcl_au*MTkwOTY2MzAwNC4xNzY1Nzc5ODUz\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Ti\u00eau chu\u1ea9n ASTMD1922<\/a><\/strong> Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1. <strong data-start=\"5105\" data-end=\"5134\">\u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a Elmendorf<\/strong> v\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng <strong data-start=\"5152\" data-end=\"5186\">\u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a m\u00e0ng nh\u1ef1a<\/strong> \u0110\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a \u1ee9ng d\u1ee5ng. Cho d\u00f9 b\u1ea1n \u0111ang ph\u00e1t tri\u1ec3n v\u1eadt li\u1ec7u m\u1edbi, ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng l\u00f4 s\u1ea3n xu\u1ea5t hay th\u1ef1c hi\u1ec7n ph\u00e2n t\u00edch so s\u00e1nh, ti\u00eau chu\u1ea9n ASTM D1922 cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ti\u00eau chu\u1ea9n h\u00f3a, \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn qu\u1ed1c t\u1ebf.<\/p>\n\n\n\n<p>B\u1eb1ng c\u00e1ch t\u00edch h\u1ee3p <strong data-start=\"5417\" data-end=\"5449\">M\u00e1y th\u1eed \u0111\u1ed9 r\u00e1ch Elmendorf SLD-01<\/strong> Khi t\u00edch h\u1ee3p Cell Instruments v\u00e0o quy tr\u00ecnh l\u00e0m vi\u1ec7c trong ph\u00f2ng th\u00ed nghi\u1ec7m ho\u1eb7c s\u1ea3n xu\u1ea5t c\u1ee7a b\u1ea1n, b\u1ea1n s\u1ebd c\u00f3 quy\u1ec1n truy c\u1eadp v\u00e0o <strong data-start=\"5529\" data-end=\"5585\">Ki\u1ec3m tra ch\u00ednh x\u00e1c, hi\u1ec7u qu\u1ea3 v\u00e0 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n.<\/strong> \u2014 gi\u00fap \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh t\u1ed1t h\u01a1n v\u00e0 n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m.<\/p>","protected":false},"excerpt":{"rendered":"<p>Elmendorf Tear Resistance: Why ASTM D1922 Matters Elmendorf tear resistance is a fundamental mechanical property for materials like polyethylene, polypropylene, polyester, and other films used in flexible packaging. The ASTM D1922 standard outlines a consistent, repeatable method to evaluate this property. The significance of ASTM D1922 lies in its ability to: This method is particularly [&hellip;]<\/p>","protected":false},"featured_media":6516,"parent":0,"template":"","meta":{"_acf_changed":true,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"standard-category":[611],"class_list":["post-9849","standard","type-standard","status-publish","has-post-thumbnail","hentry","standard-category-astm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/vi\/wp-json\/wp\/v2\/standard\/9849","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/vi\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/vi\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/vi\/wp-json\/wp\/v2\/media\/6516"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/vi\/wp-json\/wp\/v2\/media?parent=9849"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/vi\/wp-json\/wp\/v2\/standard-category?post=9849"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}