sad
@dnfsdd8aa7
有効 (3年, 5か月前)ジャニラブポイント： 6
pH Meter
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 […] 表示
This user isn't following anyone yet.
