Buffer solution pH 4.00, 500ml

Description:

A buffer solution (more precisely, pH buffer or hydrogen ion buffer) is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. A solution with a set pH value of 4.00 to be used for calibration of pH meters, monitors and controllers. The red colour for easy pH buffer value identification NIST traceable and supplied with a Certificate of Analysis.

• Accuracy of +/- 0.05 pH @ 25°C
• Temperature chart of the actual pH value at various temperatures printed on each COA