The HI 4101 ammonia gas selective electrode is a combination electrode designed for the measurement of ammonia in aqueous solutions such as waste water samples, wine, beer.
The Hanna HI 4101 is a combination electrode designed for measuring ammonia in aqueous solutions such as wastewater, wine, and beer. It operates by converting ammonium ions to ammonia gas, which is then detected by a gas-permeable PTFE membrane. The device requires an ISA (Ionic Strength Adjuster) to convert ammonium to ammonia and stabilize the solution's ionic strength.
| Species Measured | NH3 gas sensing electrode |
|---|---|
| Measurement Range | 1.0M to 1x10 M |
| Operating Temperature | 0 to 40°C |
| Dimensions | 12 mm (OD) X 120 mm (insertion) |
| Wetted materials | PTFE gas membrane |
The ISA converts ammonium ion to ammonia, adjusts the pH to about 11, and provides a constant ionic strength background.
Calibration should be checked every 1-2 hours.