This document is an instruction manual for HI 4014 and HI 4114 potassium ion selective electrodes. The electrode can be used for rapid determination of free potassium ions in water, soft drinks, wine, and soils.
The document describes the Hanna Instruments HI 4014 and HI 4114, which are ion selective electrodes designed for measuring potassium ions in aqueous solutions. The HI 4014 is a half-cell requiring a separate reference electrode, while the HI 4114 is a combination electrode with an incorporated reference.
| Ion measured | Potassium (K+) |
|---|---|
| Measurement range | 1M to 1X 10-6M |
| Operating Temperature | 0-40°C |
| Operating pH | 1.5 to 12.0 pH |
| Dimensions | 12 mm (0D) X 120 mm (4.72") |
| Connection type | BNC |
An acceptable value for this slope is 56 +/- 4 mV at typical room temperatures (20-25°C).
Presoak the potassium sensor in a 10-3M standard for at least half-hour to optimize response.