鎘離子選擇電極
專門測量Cd +2濃度為0.01 ppm至11,200 ppm（10-7 M至10-1 M）的濃度。
應用包括：電鍍浴等。
| Model # | CD21501 |
| Slope | 26 ± 3 mV between 10-100 ppm @ 25°C |
| Reproducibility | ± 2% |
| Interferences | Ag+, Hg+2, Cu+2, Pb+2, Fe+2 |
| Complexation | Heavy metals |
| Temperature Range | 0 to 80° C (if calibrated at that temperature) |
| Pressure Range | 0 to 70 psi |
| Response Time | 95% response in 30 seconds |
| Storage | Long term, store dry Short term, store in dilute cadmium standard |
| Concentration Range | 0.01 ppm to 11,200 ppm (1x10-7 M to 1x10-1 M) |
| pH Range | 2 to 12 pH |
| Resistance | < 1 megaohm |
| Care, Maintenance & Cleaning | Polish with polishing strips Treat with a dilute ISA |
| Isopotential Point | 50,000 ppm |
| On-Line Capability | Yes |
| Applications | Plating Baths |