CL200 is an ExStik® Chlorine Meter. This revolutionary technique measures Direct Total Residual Chlorine from 0.01ppm to 10ppm.
The Extech 67500B is a polycarbonate ORP electrode with a platinum sensing surface and a sealed reference. It is 13 mm by 154 mm long.
The Extech 601100 is a PVC-bodied, easy-to-clean, flat surface pH electrode.
407510 is a Heavy Duty Dissolved Oxygen Meter with PC interface. Recall Min, Max and Average readings.
The Extech SDL150 records data on an SD card in Excel format. It has a dual backlit display of oxygen concentration and temperature. I