@uyitgrvb
активность: 1 год, 10 месяцев назад
A pH meter is an electronic piece of equipment to determine the pH of a solution. An electrode (usually glass) is attached to the meter, which measures the voltage. As pH meters and probes require calibration before use, they can be calibrated with a standard buffer solution that is input into the machine (or it can be done without a solution) […] Просмотр