neoFroxx® Buffer solution pH 4.00, 500 ml

Trust is good, control is better! To regularly check the accuracy of your pH electrode - and readjust it if necessary - we offer suitable buffer solutions with precisely defined pH values. The pH calibration solutions are available as colorless and colored versions (red, green, blue). The batch-specific certificate of analysis guarantees a maximum deviation of +/- 0.02 pH units.