RICCA® pH Buffer, pH 4.00, 500 mL

RICCA pH Buffer is a high-precision, colorless pH 4.00 buffer solution, provided in a 500 mL bottle. It is specifically designed for calibrating pH meters and other pH-sensitive instruments. This reference standard has an accuracy of ± 0.01 at 25°C and is ACS NIST traceable, ensuring reliable and accurate measurements in laboratory settings.