COMBINATION ELECTRODE ERH-12-6
The combination pH electrode ERH-12-6 is designed for pH measurements in water and other liquids, especially in small volume samples. The electrode may also be used as universal pH sensor in laboratory conditions. The ERH-12-6 has a glass body and is equipped with a ceramic junction. The conical shape of the membrane and easy access to the junction makes cleaning the electrode very easy. The small diameter of the end of electrode and its shape enables making measurements in samples of a small volume in test tubes or other small vessels. Using a special test-tube, delivered in the set with the electrode, in a shape and diameter very close to the electrode’s size, enables pH measurements in samples from 0.4 cm3. In the electrode body there is a hole to refill or exchange the reference electrolyte.
Technical Data
| Measuring Range | 0 ÷ 14 pH |
|---|---|
| Temperature range | 0 ÷ 60 °C for short period usage 80 °C |
| Resistivity of the membrane (in 20°C) | 200 ÷ 500 MΩ |
| Zero point (pHE=0) | 7 ±0.5 pH |
| Reference electrode | Ag/AgCl |
| Reference solution | 3.0 M KCl +AgCl |
| Body diameter | 6.5 mm ±0.5 mm / 12.0 mm ±0.5 mm |
| Body length (without cable socket) | 120 mm ±5 mm |
| Minimal depth of immersing | 25 mm |
| Maximal depth of immersing | 90 mm |
| Body material | glass |
| Membrane shape | cone |
| Diaphragm material | ceramic |
| Cable length | about 1 m |
| Connector | BNC-50 |