Reference buffer solution for the quick calibration of pH measuring devices

摘要

The solution has a conducting salt e.g. potassium chloride and Potassium Nitrate, with concentration of greater than 0.2 molarity, where ion mobility for anion and cation of the conducting salt is equal. The ion mobility for the anion and cation differs around less than 20 percent preferably 10 percent from each other. The solution conforms to DIN 19266or DIN 19267or National Institute of Standards and Technology (NIST). The conducting salt is formed as additive.