Description
This used Metrohm 831 KF Coulometer is a compact and precise Karl Fischer titration system for trace water determination in liquids, solids, and gases. The complete configuration includes the 726 magnetic stirrer, 831 keyboard, a RS-232 printer, as well as the titration cell and generator electrode with diaphragm, providing a ready-to-use analytical setup.
The coulometer supports water determinations from 10 µg to 200 mg, with outstanding reproducibility and automatic drift compensation. The bright graphical display allows monitoring of the titration curve in real time. Two RS-232 ports provide connectivity for balance, printer, or PC integration.
The included 726 stirrer ensures consistent sample mixing, while the RS-232 printer outputs direct reports. The titration cell and generator electrode are compatible with standard Metrohm reagents and ensure fast, stable endpoint detection.
Specifications:
- Model: Metrohm 831 KF Coulometer
- Water range: 10 µg – 200 mg
- Resolution: 0.1 µg
- Reproducibility: ±3 µg or 0.3% (depending on range)
- Generator electrode: with diaphragm (included)
- Stirrer: 726 magnetic stirrer (included)
- Titration cell: complete glass cell with fittings (included)
- Printer: DP40H40COL RS-232 thermal printer
- Keyboard: dedicated 831 keypad
- Connectivity: 2 × RS-232 ports
- Power: 100–240 V, 50/60 Hz
- Dimensions (W × H × D): 145 × 169 × 307 mm
- Weight: ~3.8 kg
For more info see the Metrohm website
