Our full range of ProSource pH buffers are accurate to ±0.01pH at 25°C and are headlined by the standard pH 4.00, 7.00 & 10.00 buffers which are colour-coded for immediate identification.

ProSource Scientific pH electrode maintenance solutions are used to clean and store pH electrodes. Extend the life of your pH electrode, increase speed of response and get accurate readings.

Choose from two types of reference fill solutions: 3.8 KCl saturated with AgCl for Ag/AgCl electrodes, or 4 KCl for calomel (Hg/Hg2Cl2) electrodes.