Chemicals

Long-term storage in KCl damages the glass as it results in ever-increasing response times. The patentet 6.2323.000 Storage solution for combined pH glass electrodes has been developed to solve this very problem. If a combined pH glass electrode is kept in the Storage solution then the performance of the glass membrane does not change with respect to the response time and the alkali error.
If c(KCl) = 3 mol/L is additionally used as the reference electrolyte then the optimized composition of the Storage solution guarantees that the pH glass electrode is always ready for immediate use. Conditioning before the measurement is not necessary, no matter how long the electrode has been stored.