The Hanna HI 4012 and HI 4112 are ion selective electrodes designed for the measurement of Lead ions in aqueous solutions. The HI 4012 is a solid state half-cell sensor that requires a separate reference. The HI 4112 is a combination ion selective electrode.
The document details the use of the Hanna Instruments HI 4012 solid-state half-cell sensor and the HI 4112 combination electrode for measuring free lead ions in aqueous solutions. It explains that these are potentiometric devices suitable for plating baths and titrations, noting specific requirements regarding interfering ions like silver, copper, and cadmium.
| Ion(s) measured | Lead (Pb2+) |
|---|---|
| Measurement range | 0.1 M to 1 x 10-6 M |
| Operating pH | 4 to 7 (recommended) |
| Dimensions | 12 mm diameter x 120 mm nominal insertion |
The HI 5315 Double Junction Reference Electrode with HI 7072 Fill Solution and a suitable ion or pH/mV meter.
It should be stored dry with its protective cap on. The HI 4112 combination electrode requires draining and washing before storage.