{"product_id":"buffer-solution-ph-400-1000ml","title":"Buffer solution, pH 4.00, 1000ml","description":"\u003cp\u003eBuffer solution pH 4,00 is a ready-to-use laboratory reference standard supplied in a 1000 ml pack for calibration and verification of pH measuring systems. This WinLab® buffer is prepared to a nominal pH of 4,00 and supports routine adjustment of pH meters, glass electrodes and multiparameter instruments in analytical, quality-control and research laboratories. The 1 l nominal volume is practical for frequent bench-top calibration cycles and shared instrument stations. Each solution is accompanied by a factory test certificate according to EN 10204-2.3, giving documented batch information for traceable laboratory practice. Offered under the WinLab® range from manufacturer Windaus, the buffer fits standard aqueous pH workflows without further preparation. Laboratories rely on defined pH 4,00 points when establishing calibration curves, checking electrode slope and confirming instrument performance before sample measurement. The clear liquid format pours easily into calibration vessels or electrode holders. Suitable for educational, industrial and routine laboratory environments where a stable acidic reference buffer is required for consistent pH control.\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: 1000 ml\u003c\/li\u003e\n\u003cli\u003eProduct type: Buffer solution\u003c\/li\u003e\n\u003cli\u003epH value: 4,00\u003c\/li\u003e\n\u003cli\u003eNominal volume: 1 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_EN.pdf?v=1790233760\" 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":57933556285772,"sku":"610304054","price":12.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4827\/7068\/files\/idl-610304054.png?v=1783731213","url":"https:\/\/www.luminixhealth.com\/en-nl\/products\/buffer-solution-ph-400-1000ml","provider":"Luminix Health","version":"1.0","type":"link"}