二氧化碳離子選擇電極
專門測量4.4 ppm至440 ppm（10-4 M至10 -2 M）濃度的CO2。 相關應用包括：軟性飲料、葡萄酒、發酵樣品。
| Model # | CO21501 |
| Slope | 56 ± 3 mV between 10-100 ppm @ 25°C |
| Reproducibility | ± 2% |
| Interferences | Volatile weak acids |
| Complexation | Heavy metals |
| Temperature Range | 0 to 50° C (if calibrated at that temperature) |
| Pressure Range | 0 to 10 psi |
| Response Time | 95% response in 30 seconds |
| Storage | Long term, store dry Short term, store in carbon dioxide standard with ISA added |
| Concentration Range | 4.4 ppm to 440 ppm (1x10-4 M to 1x10-2 M) |
| pH Range | 4.8 to 5.2 pH |
| Resistance | 1000 to 1500 megaohms |
| Care, Maintenance & Cleaning | Treat with dilute carbon dioxide standard with pH adjusted to 4.8 - 5.2 Replace membrane as needed |
| Isopotential Point | Unknown |
| On-Line Capability | Yes, pH control required |
| Applications | Soft Drinks, Wine Fermentation |