American Marine PinPoint pH Calibration Fluid #7 & #10
Item Code: DA-1030
Includes 1 packet of 7.000, and 1 packet of 10.000 Calibration Fluid.
These come in single-use plastic envelope packets, and they are extremely accurate and field portable. Each packet contains enough fluid for a complete calibration (about 30 ml) and is intended to be discarded after use. pH monitor and controllers should be calibrated monthly.