Aqua Master Calibration Solution pH 4.01 500ml (Case of 8)
Aqua Master Calibration Solution pH 4.01 500ml (Case of 8): KCI Storage Solution. Traceable to NIST standard. Close immediately after use. Store between 15-25 degrees C. Do not return liquid. Thoroughly rinse the electrode before and after each use. Pour some KCI storage solution into the electrode's protective cover. Place the electrode in the solution.
