pH Meter Calibration Solution 50ml for Accurate pH Testing and ORP Measurement
ab 9,23 €
Press the "MODE/CAL" button to set the ORP mode; the word "mV" will be displayed in the upper right corner of the screen. Rinse the electrode with clean water and dry. Press and hold the "CAL" button for 5 seconds.
Jetzt bei Ebay:
