{"id":26405,"date":"2024-09-14T14:41:14","date_gmt":"2024-09-14T06:41:14","guid":{"rendered":"https:\/\/shchimay.com\/?p=26405"},"modified":"2024-09-15T13:13:51","modified_gmt":"2024-09-15T05:13:51","slug":"how-does-a-ph-meter-measure-the-ph-of-a-solution","status":"publish","type":"post","link":"https:\/\/shchimay.com\/vi\/how-does-a-ph-meter-measure-the-ph-of-a-solution\/","title":{"rendered":"m\u00e1y \u0111o ph \u0111o \u0111\u1ed9 ph c\u1ee7a dung d\u1ecbch nh\u01b0 th\u1ebf n\u00e0o"},"content":{"rendered":"<h1 id=\"understanding-the-principles-of-ph-measurement-wpaicgheading\">T\u00ecm hi\u1ec3u c\u00e1c nguy\u00ean t\u1eafc \u0111o pH<\/h1>\n<p>\nM\u00e1y \u0111o pH l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng trong l\u0129nh v\u1ef1c h\u00f3a h\u1ecdc v\u00e0 sinh h\u1ecdc \u0111\u1ec3 \u0111o \u0111\u1ed9 axit ho\u1eb7c \u0111\u1ed9 ki\u1ec1m c\u1ee7a dung d\u1ecbch. Thang \u0111o pH dao \u0111\u1ed9ng t\u1eeb 0 \u0111\u1ebfn 14, v\u1edbi 7 l\u00e0 trung t\u00ednh, gi\u00e1 tr\u1ecb d\u01b0\u1edbi 7 bi\u1ec3u th\u1ecb \u0111\u1ed9 axit v\u00e0 gi\u00e1 tr\u1ecb tr\u00ean 7 bi\u1ec3u th\u1ecb \u0111\u1ed9 ki\u1ec1m. Nh\u01b0ng m\u00e1y \u0111o pH \u0111o \u0111\u1ed9 pH c\u1ee7a dung d\u1ecbch ch\u00ednh x\u00e1c nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/shchimay.com\/wp-content\/uploads\/2024\/09\/DO-1800-Dissolved-oxygen-measurement-and-control-instrument-2.png\" alt=\"alt-310\" class=\"wp-image-310\" id=\"i310\" \/><\/p>\n<p>Th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a m\u00e1y \u0111o pH l\u00e0 \u0111i\u1ec7n c\u1ef1c th\u1ee7y tinh, r\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi c\u00e1c ion hydro trong dung d\u1ecbch \u0111ang \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m. Khi \u0111i\u1ec7n c\u1ef1c th\u1ee7y tinh ti\u1ebfp x\u00fac v\u1edbi dung d\u1ecbch, s\u1ebd t\u1ea1o ra s\u1ef1 ch\u00eanh l\u1ec7ch \u0111i\u1ec7n th\u1ebf gi\u1eefa b\u00ean trong v\u00e0 b\u00ean ngo\u00e0i \u0111i\u1ec7n c\u1ef1c. S\u1ef1 ch\u00eanh l\u1ec7ch \u0111i\u1ec7n th\u1ebf n\u00e0y t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi n\u1ed3ng \u0111\u1ed9 ion hydro trong dung d\u1ecbch, n\u1ed3ng \u0111\u1ed9 n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u00ednh gi\u00e1 tr\u1ecb pH.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td>CCT-3300<\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>Kh\u00f4ng \u0111\u1ed5i<\/td>\n<td>10,00cm-1<\/td>\n<td>1.000cm-1<\/td>\n<td>0.100cm-1<\/td>\n<td>0,010cm-1<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n<\/td>\n<td>(500\uff5e20.000)<\/td>\n<td>(1.0\uff5e2.000)<\/td>\n<td>(0.5\uff5e200)<\/td>\n<td>(0.05\uff5e18.25)<\/td>\n<\/tr>\n<tr>\n<td>\u03bcS\/cm<\/td>\n<td>\u03bcS\/cm<\/td>\n<td>\u03bcS\/cm<\/td>\n<td>M\u03a9\u00b7cm<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\">TDS<\/td>\n<td>(250\uff5e10.000)<\/td>\n<td>(0,5\uff5e1.000)<\/td>\n<td>(0,25\uff5e100)<\/td>\n<td rowspan=\"2\">\u2014\u2014<\/td>\n<\/tr>\n<tr>\n<td>ppm<\/td>\n<td>ppm<\/td>\n<td>ppm<\/td>\n<\/tr>\n<tr>\n<td>Nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh.<\/td>\n<td colspan=\"4\">(0\uff5e50)\u2103\uff08Nhi\u1ec7t \u0111\u1ed9. B\u1ed3i th\u01b0\u1eddng : NTC10K\uff09<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"3\">\u0110\u1ed9 ph\u00e2n gi\u1ea3i<\/td>\n<td colspan=\"4\">\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n: 0,01\u03bcS\/cm\uff1b0,01mS\/cm<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\">TDS: 0,01ppm<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\">Nhi\u1ec7t \u0111\u1ed9: 0,1\u2103<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"4\">\u0110\u1ed9 ch\u00ednh x\u00e1c<\/td>\n<td colspan=\"4\">\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n:1,5% \uff08FS\uff09<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\">\u0110i\u1ec7n tr\u1edf su\u1ea5t: 2,0% \uff08FS\uff09<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\">TDS:1,5% \uff08FS\uff09<\/td>\n<\/tr>\n<tr>\n<td colspan=\"4\">Nhi\u1ec7t \u0111\u1ed9:\u00b10.5\u2103<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u Ra T\u01b0\u01a1ng T\u1ef1<\/td>\n<td colspan=\"4\">B\u1ed9 ph\u00e1t\/b\u1ed9 ph\u00e1t \u0111\u01a1n c\u00e1ch ly(4\uff5e20)mA\uff0cinstrument \u0111\u1ec3 l\u1ef1a ch\u1ecdn<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u Ra \u0110i\u1ec1u Khi\u1ec3n<\/td>\n<td colspan=\"4\">R\u01a1le SPDT\uff0cC\u00f4ng su\u1ea5t t\u1ea3i: AC 230V\/50A(T\u1ed1i \u0111a)<\/td>\n<\/tr>\n<tr>\n<td>M\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c<\/td>\n<td colspan=\"4\">Nhi\u1ec7t \u0111\u1ed9:\u00a0(0\uff5e50)\u2103\uff1b\u0110\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i\uff1a\u00a0\u226485 ph\u1ea7n tr\u0103m RH (kh\u00f4ng ng\u01b0ng t\u1ee5)<\/td>\n<\/tr>\n<tr>\n<td>M\u00f4i tr\u01b0\u1eddng l\u01b0u tr\u1eef<\/td>\n<td colspan=\"4\">Nhi\u1ec7t \u0111\u1ed9:(-20\uff5e60)\u2103; \u0110\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i\u00a0\u226485 ph\u1ea7n tr\u0103m RH(kh\u00f4ng ng\u01b0ng t\u1ee5)<\/td>\n<\/tr>\n<tr>\n<td>Ngu\u1ed3n \u0111i\u1ec7n<\/td>\n<td colspan=\"4\">DC 24V\/AC 110V\/AC 220V\u00b115 ph\u1ea7n tr\u0103m \uff08\u0111\u1ec3 l\u1ef1a ch\u1ecdn\uff09<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc<\/td>\n<td colspan=\"4\">48mm\u00d796mm\u00d780mm (H\u00d7W\u00d7D)<\/td>\n<\/tr>\n<tr>\n<td>K\u00edch th\u01b0\u1edbc l\u1ed7<\/td>\n<td colspan=\"4\">44mm\u00d792mm (H\u00d7W)<\/td>\n<\/tr>\n<tr>\n<td>C\u00e0i \u0111\u1eb7t<\/td>\n<td colspan=\"4\">G\u1eafn b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n, l\u1eafp \u0111\u1eb7t nhanh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\n\u0110\u1ec3 \u0111o \u0111\u1ed9 pH c\u1ee7a dung d\u1ecbch, \u0111i\u1ec7n c\u1ef1c th\u1ee7y tinh \u0111\u01b0\u1ee3c ng\u00e2m trong dung d\u1ecbch v\u00e0 \u0111i\u1ec7n c\u1ef1c tham chi\u1ebfu c\u0169ng \u0111\u01b0\u1ee3c \u0111\u1eb7t trong dung d\u1ecbch \u0111\u1ec3 t\u1ea1o \u0111i\u1ec3m tham chi\u1ebfu \u1ed5n \u0111\u1ecbnh cho ph\u00e9p \u0111o. Sau \u0111\u00f3, hi\u1ec7u \u0111i\u1ec7n th\u1ebf gi\u1eefa \u0111i\u1ec7n c\u1ef1c th\u1ee7y tinh v\u00e0 \u0111i\u1ec7n c\u1ef1c tham chi\u1ebfu \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng m\u00e1y \u0111o pH v\u00e0 gi\u00e1 tr\u1ecb n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u00ednh \u0111\u1ed9 pH c\u1ee7a dung d\u1ecbch.<\/p>\n<p>M\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng c\u1ea7n xem x\u00e9t khi s\u1eed d\u1ee5ng m\u00e1y \u0111o pH l\u00e0 hi\u1ec7u chu\u1ea9n. M\u00e1y \u0111o pH c\u1ea7n \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean b\u1eb1ng dung d\u1ecbch \u0111\u1ec7m c\u00f3 gi\u00e1 tr\u1ecb pH \u0111\u00e3 bi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ph\u00e9p \u0111o ch\u00ednh x\u00e1c. Hi\u1ec7u chu\u1ea9n s\u1ebd \u0111i\u1ec1u ch\u1ec9nh m\u00e1y \u0111o pH \u0111\u1ec3 t\u00ednh \u0111\u1ebfn b\u1ea5t k\u1ef3 s\u1ef1 tr\u00f4i d\u1ea1t ho\u1eb7c thay \u0111\u1ed5i n\u00e0o v\u1ec1 \u0111\u1ed9 nh\u1ea1y c\u1ee7a \u0111i\u1ec7n c\u1ef1c th\u1ee7y tinh theo th\u1eddi gian.<\/p>\n<p>M\u1ed9t y\u1ebfu t\u1ed1 kh\u00e1c c\u1ea7n xem x\u00e9t l\u00e0 nhi\u1ec7t \u0111\u1ed9. \u0110\u1ed9 pH c\u1ee7a dung d\u1ecbch c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec7t \u0111\u1ed9, v\u00ec v\u1eady \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i \u0111o nhi\u1ec7t \u0111\u1ed9 c\u1ee7a dung d\u1ecbch v\u00e0 s\u1eed d\u1ee5ng t\u00ednh n\u0103ng b\u00f9 nhi\u1ec7t \u0111\u1ed9 tr\u00ean m\u00e1y \u0111o pH \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh m\u1ecdi thay \u0111\u1ed5i v\u1ec1 \u0111\u1ed9 pH li\u00ean quan \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9.<\/p>\n<p>Ngo\u00e0i k\u00ednh \u0111i\u1ec7n c\u1ef1c v\u00e0 \u0111i\u1ec7n c\u1ef1c tham chi\u1ebfu, m\u00e1y \u0111o pH c\u00f2n c\u00f3 b\u1ed9 ph\u1eadn hi\u1ec3n th\u1ecb hi\u1ec3n th\u1ecb gi\u00e1 tr\u1ecb pH c\u1ee7a dung d\u1ecbch \u0111ang \u0111\u01b0\u1ee3c ki\u1ec3m tra. M\u1ed9t s\u1ed1 m\u00e1y \u0111o pH c\u00f2n c\u00f3 c\u00e1c t\u00ednh n\u0103ng b\u1ed5 sung nh\u01b0 b\u00f9 nhi\u1ec7t \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng, kh\u1ea3 n\u0103ng ghi d\u1eef li\u1ec7u v\u00e0 kh\u1ea3 n\u0103ng l\u01b0u tr\u1eef d\u1eef li\u1ec7u hi\u1ec7u chu\u1ea9n cho nhi\u1ec1u dung d\u1ecbch \u0111\u1ec7m.<\/p>\n<div style=\"width: 640px;\" class=\"wp-video\"><!--[if lt IE 9]><script>document.createElement('video');<\/script><![endif]-->\n<video class=\"wp-video-shortcode\" id=\"video-26405-1\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/CM230s-\u7ecf\u6d4e\u578b\u7535\u5bfc\u7387\u4eea.mp4?_=1\" \/><a href=\"http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/CM230s-\u7ecf\u6d4e\u578b\u7535\u5bfc\u7387\u4eea.mp4\">http:\/\/shchimay.com\/wp-content\/uploads\/2023\/11\/CM230s-\u7ecf\u6d4e\u578b\u7535\u5bfc\u7387\u4eea.mp4<\/a><\/video><\/div>\n<p>Nh\u00ecn chung, m\u00e1y \u0111o pH \u0111o \u0111\u1ed9 pH c\u1ee7a dung d\u1ecbch b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng \u0111i\u1ec7n c\u1ef1c th\u1ee7y tinh nh\u1ea1y c\u1ea3m v\u1edbi c\u00e1c ion hydro, \u0111i\u1ec7n c\u1ef1c tham chi\u1ebfu \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 b\u1ed9 hi\u1ec3n th\u1ecb \u0111\u1ec3 hi\u1ec3n th\u1ecb gi\u00e1 tr\u1ecb pH. Hi\u1ec7u chu\u1ea9n th\u01b0\u1eddng xuy\u00ean v\u00e0 b\u00f9 nhi\u1ec7t \u0111\u1ed9 l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng c\u1ea7n c\u00e2n nh\u1eafc khi s\u1eed d\u1ee5ng m\u00e1y \u0111o pH \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n<p>T\u00f3m l\u1ea1i, hi\u1ec3u c\u00e1ch m\u00e1y \u0111o pH \u0111o \u0111\u1ed9 pH c\u1ee7a dung d\u1ecbch l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 ai l\u00e0m vi\u1ec7c trong l\u0129nh v\u1ef1c h\u00f3a h\u1ecdc ho\u1eb7c sinh h\u1ecdc . B\u1eb1ng c\u00e1ch bi\u1ebft c\u00e1c nguy\u00ean t\u1eafc \u0111\u1eb1ng sau ph\u00e9p \u0111o pH v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng m\u00e1y \u0111o pH \u0111\u00fang c\u00e1ch, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u v\u00e0 nh\u00e0 khoa h\u1ecdc c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c s\u1ed1 \u0111o pH ch\u00ednh x\u00e1c v\u00e0 \u0111\u00e1ng tin c\u1eady cho c\u00e1c th\u00ed nghi\u1ec7m v\u00e0 ph\u00e2n t\u00edch c\u1ee7a m\u00ecnh.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u c\u00e1c nguy\u00ean t\u1eafc \u0111o pH M\u00e1y \u0111o pH l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng trong l\u0129nh v\u1ef1c h\u00f3a h\u1ecdc v\u00e0 sinh h\u1ecdc \u0111\u1ec3 \u0111o \u0111\u1ed9 axit ho\u1eb7c \u0111\u1ed9 ki\u1ec1m c\u1ee7a dung d\u1ecbch. Thang \u0111o pH dao \u0111\u1ed9ng t\u1eeb 0 \u0111\u1ebfn 14, v\u1edbi 7 l\u00e0 trung t\u00ednh, gi\u00e1 tr\u1ecb d\u01b0\u1edbi 7 bi\u1ec3u th\u1ecb \u0111\u1ed9&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"categories":[200],"tags":[11579,134481],"translation":{"provider":"WPGlobus","version":"2.12.0","language":"vi","enabled_languages":["en","zh","es","de","fr","ru","pt","ar","ja","ko","it","id","hi","th","vi","tr"],"languages":{"en":{"title":true,"content":true,"excerpt":false},"zh":{"title":true,"content":true,"excerpt":false},"es":{"title":true,"content":true,"excerpt":false},"de":{"title":true,"content":true,"excerpt":false},"fr":{"title":true,"content":true,"excerpt":false},"ru":{"title":true,"content":true,"excerpt":false},"pt":{"title":true,"content":true,"excerpt":false},"ar":{"title":true,"content":true,"excerpt":false},"ja":{"title":true,"content":true,"excerpt":false},"ko":{"title":true,"content":true,"excerpt":false},"it":{"title":true,"content":true,"excerpt":false},"id":{"title":true,"content":true,"excerpt":false},"hi":{"title":true,"content":true,"excerpt":false},"th":{"title":true,"content":true,"excerpt":false},"vi":{"title":true,"content":true,"excerpt":false},"tr":{"title":true,"content":true,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/26405"}],"collection":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/comments?post=26405"}],"version-history":[{"count":17,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/26405\/revisions"}],"predecessor-version":[{"id":26673,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/posts\/26405\/revisions\/26673"}],"wp:attachment":[{"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/media?parent=26405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/categories?post=26405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shchimay.com\/vi\/wp-json\/wp\/v2\/tags?post=26405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}