{"id":7520,"date":"2025-12-14T23:29:37","date_gmt":"2025-12-14T16:29:37","guid":{"rendered":"https:\/\/www.dss.go.th\/nirl\/?page_id=7520"},"modified":"2026-01-12T13:48:32","modified_gmt":"2026-01-12T06:48:32","slug":"metrological-traceability-and-primary-method","status":"publish","type":"page","link":"https:\/\/www.dss.go.th\/nirl\/metrological-traceability-and-primary-method\/","title":{"rendered":"Metrological Traceability and Primary Method"},"content":{"rendered":"<div class=\"n2_clear\"><ss3-force-full-width data-overflow-x=\"body\" data-horizontal-selector=\"body\"><div class=\"n2-section-smartslider fitvidsignore  n2_clear\" data-ssid=\"46\"><div id=\"n2-ss-46-align\" class=\"n2-ss-align\"><div class=\"n2-padding\"><div id=\"n2-ss-46\" data-creator=\"Smart Slider 3\" data-responsive=\"fullwidth\" class=\"n2-ss-slider n2-ow n2-has-hover n2notransition  \"><div class=\"n2-ss-slider-wrapper-inside\">\n        <div class=\"n2-ss-slider-1 n2_ss__touch_element n2-ow\">\n            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data-blur=\"0\" data-opacity=\"100\" data-x=\"50\" data-y=\"50\" data-alt=\"\" data-title=\"\"><picture class=\"skip-lazy\" data-skip-lazy=\"1\"><img decoding=\"async\" src=\"\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/Banner-Metrological-Traceability-and-Primary-Method-2.png\" alt=\"\" title=\"\" loading=\"lazy\" class=\"skip-lazy\" data-skip-lazy=\"1\"><\/picture><\/div><div data-color=\"RGBA(255,255,255,0)\" style=\"background-color: RGBA(255,255,255,0);\" class=\"n2-ss-slide-background-color\"><\/div><\/div><\/div>                    <div class=\"n2-ss-slider-4 n2-ow\">\n                        <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 2500 600\" data-related-device=\"desktopPortrait\" class=\"n2-ow n2-ss-preserve-size n2-ss-preserve-size--slider n2-ss-slide-limiter\"><\/svg><div data-first=\"1\" data-slide-duration=\"0\" data-id=\"258\" data-slide-public-id=\"1\" data-title=\"Banner Metrological Traceability and Primary Method 1\" class=\"n2-ss-slide n2-ow  n2-ss-slide-258\"><div role=\"note\" class=\"n2-ss-slide--focus\" tabindex=\"-1\">Banner Metrological Traceability and Primary Method 1<\/div><div class=\"n2-ss-layers-container n2-ss-slide-limiter n2-ow\"><div class=\"n2-ss-layer n2-ow n-uc-WsApKit8P7AG\" data-sstype=\"slide\" data-pm=\"default\"><\/div><\/div><\/div><div data-slide-duration=\"0\" data-id=\"259\" data-slide-public-id=\"2\" aria-hidden=\"true\" data-title=\"Banner Metrological Traceability and Primary Method 2\" class=\"n2-ss-slide n2-ow  n2-ss-slide-259\"><div role=\"note\" class=\"n2-ss-slide--focus\" tabindex=\"-1\">Banner Metrological Traceability and Primary Method 2<\/div><div class=\"n2-ss-layers-container n2-ss-slide-limiter n2-ow\"><div class=\"n2-ss-layer n2-ow n-uc-hO6nNmBnYg5B\" data-sstype=\"slide\" data-pm=\"default\"><\/div><\/div><\/div>                    <\/div>\n\n                                    <\/div>\n            <\/div>\n        <\/div>\n        <div class=\"n2-ss-slider-controls n2-ss-slider-controls-absolute-left-center\"><div style=\"--widget-offset:15px;\" class=\"n2-ss-widget nextend-arrow n2-ow-all nextend-arrow-previous  nextend-arrow-animated-fade\" data-hide-mobileportrait=\"1\" id=\"n2-ss-46-arrow-previous\" role=\"button\" aria-label=\"previous arrow\" tabindex=\"0\"><img decoding=\"async\" width=\"32\" height=\"32\" class=\"skip-lazy\" data-skip-lazy=\"1\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMzIiIGhlaWdodD0iMzIiIHZpZXdCb3g9IjAgMCAzMiAzMiIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxwYXRoIGQ9Ik0xMS40MzMgMTUuOTkyTDIyLjY5IDUuNzEyYy4zOTMtLjM5LjM5My0xLjAzIDAtMS40Mi0uMzkzLS4zOS0xLjAzLS4zOS0xLjQyMyAwbC0xMS45OCAxMC45NGMtLjIxLjIxLS4zLjQ5LS4yODUuNzYtLjAxNS4yOC4wNzUuNTYuMjg0Ljc3bDExLjk4IDEwLjk0Yy4zOTMuMzkgMS4wMy4zOSAxLjQyNCAwIC4zOTMtLjQuMzkzLTEuMDMgMC0xLjQybC0xMS4yNTctMTAuMjkiCiAgICAgICAgICBmaWxsPSIjZmZmZmZmIiBvcGFjaXR5PSIwLjgiIGZpbGwtcnVsZT0iZXZlbm9kZCIvPgo8L3N2Zz4=\" alt=\"previous arrow\"><\/div><\/div><div class=\"n2-ss-slider-controls n2-ss-slider-controls-absolute-right-center\"><div style=\"--widget-offset:15px;\" class=\"n2-ss-widget nextend-arrow n2-ow-all nextend-arrow-next  nextend-arrow-animated-fade\" data-hide-mobileportrait=\"1\" id=\"n2-ss-46-arrow-next\" role=\"button\" aria-label=\"next arrow\" tabindex=\"0\"><img decoding=\"async\" width=\"32\" height=\"32\" class=\"skip-lazy\" data-skip-lazy=\"1\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMzIiIGhlaWdodD0iMzIiIHZpZXdCb3g9IjAgMCAzMiAzMiIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxwYXRoIGQ9Ik0xMC43MjIgNC4yOTNjLS4zOTQtLjM5LTEuMDMyLS4zOS0xLjQyNyAwLS4zOTMuMzktLjM5MyAxLjAzIDAgMS40MmwxMS4yODMgMTAuMjgtMTEuMjgzIDEwLjI5Yy0uMzkzLjM5LS4zOTMgMS4wMiAwIDEuNDIuMzk1LjM5IDEuMDMzLjM5IDEuNDI3IDBsMTIuMDA3LTEwLjk0Yy4yMS0uMjEuMy0uNDkuMjg0LS43Ny4wMTQtLjI3LS4wNzYtLjU1LS4yODYtLjc2TDEwLjcyIDQuMjkzeiIKICAgICAgICAgIGZpbGw9IiNmZmZmZmYiIG9wYWNpdHk9IjAuOCIgZmlsbC1ydWxlPSJldmVub2RkIi8+Cjwvc3ZnPg==\" alt=\"next arrow\"><\/div><\/div><\/div><\/div><ss3-loader><\/ss3-loader><\/div><\/div><div class=\"n2_clear\"><\/div><\/div><\/ss3-force-full-width><\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center has-ast-global-color-0-color has-text-color has-link-color wp-elements-1\" style=\"font-size:25px\"><strong>\u0e2d\u0e1a\u0e23\u0e21\u0e40\u0e0a\u0e34\u0e07\u0e1b\u0e0f\u0e34\u0e1a\u0e31\u0e15\u0e34\u0e01\u0e32\u0e23 Metrological Traceability and Primary Method<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"has-ast-global-color-2-color has-text-color has-link-color wp-elements-2 wp-block-paragraph\" style=\"font-size:20px\">\ud83e\udd7c \u0e27\u0e34\u0e17\u0e22\u0e32\u0e01\u0e23 : \u0e14\u0e23.\u0e1e\u0e08\u0e21\u0e32\u0e19 \u0e17\u0e48\u0e32\u0e08\u0e35\u0e19 (\u0e23\u0e31\u0e01\u0e29\u0e32\u0e01\u0e32\u0e23\u0e2d\u0e18\u0e34\u0e1a\u0e14\u0e35\u0e01\u0e23\u0e21\u0e27\u0e34\u0e17\u0e22\u0e32\u0e28\u0e32\u0e2a\u0e15\u0e23\u0e4c\u0e1a\u0e23\u0e34\u0e01\u0e32\u0e23, \u0e23\u0e2d\u0e07\u0e2d\u0e18\u0e34\u0e1a\u0e14\u0e35\u0e01\u0e23\u0e21\u0e27\u0e34\u0e17\u0e22\u0e32\u0e28\u0e32\u0e2a\u0e15\u0e23\u0e4c\u0e1a\u0e23\u0e34\u0e01\u0e32\u0e23) <br>\ud83d\udd58 \u0e27\u0e31\u0e19\u0e17\u0e35\u0e48 27 \u0e1e\u0e24\u0e28\u0e08\u0e34\u0e01\u0e32\u0e22\u0e19 \u0e1e.\u0e28. 2568 <br>\ud83d\udccd \u0e13 \u0e2b\u0e49\u0e2d\u0e07\u0e1b\u0e23\u0e30\u0e0a\u0e38\u0e21\u0e20\u0e39\u0e21\u0e34\u0e1a\u0e14\u0e34\u0e19\u0e17\u0e23\u0e4c \u0e0a\u0e31\u0e49\u0e19 6 \u0e2d\u0e32\u0e04\u0e32\u0e23 \u0e2a\u0e1e\u0e19\u0e27. \u0e01\u0e23\u0e21\u0e27\u0e34\u0e17\u0e22\u0e32\u0e28\u0e32\u0e2a\u0e15\u0e23\u0e4c\u0e1a\u0e23\u0e34\u0e01\u0e32\u0e23<\/p>\n\n\n\n<figure class=\"wp-block-image size-full has-custom-border\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/Cover-1-Metrological-traceability-and-Primary-method-of-measurement.png\" alt=\"\" class=\"wp-image-7541\" style=\"border-top-left-radius:30px;border-top-right-radius:30px;border-bottom-left-radius:30px;border-bottom-right-radius:30px\" srcset=\"https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/Cover-1-Metrological-traceability-and-Primary-method-of-measurement.png 1920w, https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/Cover-1-Metrological-traceability-and-Primary-method-of-measurement-300x169.png 300w, https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/Cover-1-Metrological-traceability-and-Primary-method-of-measurement-1024x576.png 1024w, https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/Cover-1-Metrological-traceability-and-Primary-method-of-measurement-768x432.png 768w, https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/Cover-1-Metrological-traceability-and-Primary-method-of-measurement-1536x864.png 1536w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"has-ast-global-color-2-color has-text-color has-link-color wp-elements-3 wp-block-paragraph\" style=\"font-size:25px\">\ud83d\udce2 <strong>\u0e42\u0e1b\u0e2a\u0e40\u0e15\u0e2d\u0e23\u0e4c\u0e01\u0e32\u0e23\u0e2d\u0e1a\u0e23\u0e21\u0e40\u0e0a\u0e34\u0e07\u0e1b\u0e0f\u0e34\u0e1a\u0e31\u0e15\u0e34\u0e01\u0e32\u0e23<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"1414\" height=\"2000\" src=\"https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/Metrological-Traceability-and-Primary-Method-Poster.png\" alt=\"\" class=\"wp-image-7525\" style=\"border-top-left-radius:30px;border-top-right-radius:30px;border-bottom-left-radius:30px;border-bottom-right-radius:30px\" srcset=\"https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/Metrological-Traceability-and-Primary-Method-Poster.png 1414w, https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/Metrological-Traceability-and-Primary-Method-Poster-212x300.png 212w, https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/Metrological-Traceability-and-Primary-Method-Poster-724x1024.png 724w, https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/Metrological-Traceability-and-Primary-Method-Poster-768x1086.png 768w, https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/Metrological-Traceability-and-Primary-Method-Poster-1086x1536.png 1086w\" sizes=\"(max-width: 1414px) 100vw, 1414px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"has-ast-global-color-2-color has-text-color has-link-color wp-elements-4 wp-block-paragraph\" style=\"font-size:25px\">\ud83d\udcf7 <strong>\u0e23\u0e39\u0e1b\u0e20\u0e32\u0e1e\u0e20\u0e32\u0e22\u0e43\u0e19\u0e07\u0e32\u0e19\u0e01\u0e32\u0e23\u0e2d\u0e1a\u0e23\u0e21\u0e40\u0e0a\u0e34\u0e07\u0e1b\u0e0f\u0e34\u0e1a\u0e31\u0e15\u0e34\u0e01\u0e32\u0e23<\/strong><\/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 has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" data-id=\"7174\" src=\"https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/10_3-12-2025-1024x683.jpg\" alt=\"\" class=\"wp-image-7174\" style=\"border-top-left-radius:30px;border-top-right-radius:30px;border-bottom-left-radius:30px;border-bottom-right-radius:30px\" srcset=\"https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/10_3-12-2025-1024x683.jpg 1024w, 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https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/8_3-12-2025-1536x1024.jpg 1536w, https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/8_3-12-2025.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" data-id=\"7170\" src=\"https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/6_3-12-2025-1024x683.jpg\" alt=\"\" class=\"wp-image-7170\" style=\"border-top-left-radius:30px;border-top-right-radius:30px;border-bottom-left-radius:30px;border-bottom-right-radius:30px\" srcset=\"https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/6_3-12-2025-1024x683.jpg 1024w, https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/6_3-12-2025-300x200.jpg 300w, https:\/\/www.dss.go.th\/nirl\/wp-content\/uploads\/2025\/12\/6_3-12-2025-768x512.jpg 768w, 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is-layout-constrained wp-block-cover-is-layout-constrained\">\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u0e2d\u0e1a\u0e23\u0e21\u0e40\u0e0a\u0e34\u0e07\u0e1b\u0e0f\u0e34\u0e1a\u0e31\u0e15\u0e34\u0e01\u0e32\u0e23 Metrological Traceability and Primary Method \ud83e\udd7c \u0e27\u0e34\u0e17\u0e22\u0e32\u0e01\u0e23 : \u0e14\u0e23.\u0e1e\u0e08\u0e21\u0e32\u0e19 \u0e17\u0e48\u0e32\u0e08\u0e35\u0e19 (\u0e23\u0e31\u0e01\u0e29\u0e32\u0e01\u0e32\u0e23\u0e2d\u0e18\u0e34\u0e1a\u0e14\u0e35\u0e01\u0e23\u0e21\u0e27\u0e34\u0e17\u0e22\u0e32\u0e28\u0e32\u0e2a\u0e15\u0e23\u0e4c\u0e1a\u0e23\u0e34\u0e01\u0e32\u0e23, \u0e23\u0e2d\u0e07\u0e2d\u0e18\u0e34\u0e1a\u0e14\u0e35\u0e01\u0e23\u0e21\u0e27\u0e34\u0e17\u0e22\u0e32\u0e28\u0e32\u0e2a\u0e15\u0e23\u0e4c\u0e1a\u0e23\u0e34\u0e01\u0e32\u0e23) \ud83d\udd58 \u0e27\u0e31\u0e19\u0e17\u0e35\u0e48 27 \u0e1e\u0e24\u0e28\u0e08\u0e34\u0e01\u0e32\u0e22\u0e19 \u0e1e.\u0e28. 2568 \ud83d\udccd \u0e13 \u0e2b\u0e49\u0e2d\u0e07\u0e1b\u0e23\u0e30\u0e0a\u0e38\u0e21\u0e20\u0e39\u0e21\u0e34\u0e1a\u0e14\u0e34\u0e19\u0e17\u0e23\u0e4c \u0e0a\u0e31\u0e49\u0e19 6 \u0e2d\u0e32\u0e04\u0e32\u0e23 \u0e2a\u0e1e\u0e19\u0e27. \u0e01\u0e23\u0e21\u0e27\u0e34\u0e17\u0e22\u0e32\u0e28\u0e32\u0e2a\u0e15\u0e23\u0e4c\u0e1a\u0e23\u0e34\u0e01\u0e32\u0e23 \ud83d\udce2 \u0e42\u0e1b\u0e2a\u0e40\u0e15\u0e2d\u0e23\u0e4c\u0e01\u0e32\u0e23\u0e2d\u0e1a\u0e23\u0e21\u0e40\u0e0a\u0e34\u0e07\u0e1b\u0e0f\u0e34\u0e1a\u0e31\u0e15\u0e34\u0e01\u0e32\u0e23 \ud83d\udcf7 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_angie_page":false,"_surecart_dashboard_logo_width":"180px","_surecart_dashboard_show_logo":true,"_surecart_dashboard_navigation_orders":true,"_surecart_dashboard_navigation_invoices":true,"_surecart_dashboard_navigation_subscriptions":true,"_surecart_dashboard_navigation_downloads":true,"_surecart_dashboard_navigation_billing":true,"_surecart_dashboard_navigation_account":true,"_uag_custom_page_level_css":"","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":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","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":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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