169,437,783 – 118,606,454
Brief description of principle:
In an acidic solution, trivalent chromium is oxidized by potassium permanganate to hexavalent chromium, and hexavalent chromium reacts with diphenylcarbazide to form a purple-red complex, which is measured at a wavelength of 540nm.
1. The main components adopt imported brands to ensure their accuracy, stability and reliability;
2. Infrared measurement unit, accurate quantification;
3. Adopting positive/negative pressure current technology, the peristaltic pump tube does not pass through liquid, which is stable and durable.
4. Three-point automatic calibration, high linear correlation;
5. Special LED light source, high signal-to-noise ratio;
6. RS232/RS485 interface, standard MODBUS protocol, can remotely read the operating status and related data of the instrument;