![PINPOINT ORP REDOX 400 Calibration Fluid](http://aquatics.sg/cdn/shop/products/51uA7vcIoVL._SX425_{width}x.jpg?v=1531130622)
PINPOINT ORP REDOX 400 Calibration Fluid
The American Marine ORP / REDOX Calibration Fluid 400 mV is convenient and easy to use: no mixing is required and highly accurate.
Packaged in single--use plastic foil pouches similar to PinPoint pH calibration fluids. For test results, recalibrate the ORP monitor/controller monthly.
Packaged in single--use plastic foil pouches similar to PinPoint pH calibration fluids. For test results, recalibrate the ORP monitor/controller monthly.