{"product_id":"buffer-solution-ph-400-500ml","title":"Buffer solution, pH 4.00, 500ml","description":"\u003cp\u003eBuffer solution pH 4,00 is a ready-to-use calibration buffer supplied in a 500 ml pack for pH electrode adjustment and verification. The nominal pH value of 4 supports routine multi-point or single-point calibration workflows in analytical and quality-control laboratories where an acidic reference point is required. Each batch is accompanied by a factory test certificate in accordance with EN 10204-2.3, documenting the controlled production of the solution. Offered under the WinLab® buffer range from manufacturer Windaus, the product is intended for use with standard laboratory pH meters and combination electrodes. The 0,5 l nominal volume suits bench-top calibration stations and shared instrument pools without frequent bottle changes. Clear labelling of the pH 4,00 value helps operators select the correct buffer during daily setup, method validation, or instrument checks. This buffer solution provides a straightforward acidic calibration standard for laboratories that rely on documented WinLab® pH buffers with EN 10204-2.3 factory certification.\u003c\/p\u003e\n\u003c!-- lx-pdp-inline --\u003e\n\u003cp\u003eThis article is part of \u003ca href=\"\/en-nl\/collections\/ph-buffers-and-conductivity-standards\"\u003epH buffers \u0026amp; conductivity standards\u003c\/a\u003e, in \u003ca href=\"\/en-nl\/collections\/buffers-and-ph-solutions\"\u003eBuffers \u0026amp; pH solutions\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePack size: 500 ml\u003c\/li\u003e\n\u003cli\u003eProduct type: pH buffer solution\u003c\/li\u003e\n\u003cli\u003epH value: 4,00\u003c\/li\u003e\n\u003cli\u003eNominal volume: 0,5 l\u003c\/li\u003e\n\u003cli\u003eBrand: WinLab®\u003c\/li\u003e\n\u003cli\u003eCertificate: Factory test certificate EN 10204-2.3\u003c\/li\u003e\n\u003cli class=\"lx-tis-li\"\u003eTechnical Information Sheet: \u003ca class=\"sds-link\" href=\"https:\/\/www.luminixhealth.com\/cdn\/shop\/files\/KG12_05_01_0910.pdf?v=1788413512\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"display:inline;vertical-align:middle\" title=\"Technical sheet PDF\" aria-label=\"Technical sheet PDF\"\u003e\u003cimg class=\"sds-icon\" src=\"https:\/\/img.icons8.com\/color\/48\/pdf.png\" alt=\"PDF\" width=\"18\" height=\"18\" style=\"width:18px;height:18px;max-width:18px;margin:0;padding:0;display:inline;vertical-align:middle;border:0;\"\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Windaus","offers":[{"title":"Default Title","offer_id":57933555335500,"sku":"610304044","price":7.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4827\/7068\/files\/idl-610304044.png?v=1783731204","url":"https:\/\/www.luminixhealth.com\/en-nl\/products\/buffer-solution-ph-400-500ml","provider":"Luminix Health","version":"1.0","type":"link"}