Buffer Standard Solution | 250ml | pH 4.0 at 20°C | Traceable to NIST 7757-83-7) is of analytical reagent

7757-83-7) is of analytical reagent (AR) / American Chemical Society (ACS) grade with a minimum purity of 98

leak resistant lid and tamper evident cap make for safe travels

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2x125ml Decolorizer

Buffer Standard Solution | 250ml | pH 4.0 at 20°C | Traceable to NIST 7757-83-7) is of analytical reagentBuffer standard solution with a precise pH of 4. 0 at 20C, ideal for calibrating pH meters and sensors. Traceable to NIST standards ensures accurate and reliable calibration for scientific and industrial applications. Liquid form for easy handling and accurate measurement, suitable for laboratory or field use. Stable and consistent formulation designed to maintain pH accuracy under varying conditions. Ideal for educational, laboratory, and industrial