Measurement Principle:

The HMA-CR6 hexavalent chromium heavy metal detector uses diphenylcarbodhydazide spectrophotometry as its method for determining hexavalent chromium. In acidic solution, hexavalent chromium in the water sample reacts with diphenylcarbodihydrazine (DPC) to form a purplish-red compound, which is spectrophotometric at a wavelength of 540 nm. Based on the initial color of the sample, which differs from the color after adding the color reagent, a colorimetric measurement is performed using a colorimeter to finally calculate the concentration of hexavalent chromium.

The main methods for determining hexavalent chromium in water include diphenylcarbazide spectrophotometry, fluorescence photometry, ion chromatography, and atomic absorption spectrometry. The spectrophotometric method for determining hexavalent chromium in water using diphenylcarbodhydrazine is widely used by environmental monitors due to its sensitivity and selectivity.

Typical Applications:

The HMA-CR6 hexavalent chromium heavy metal tester is suitable for measuring hexavalent chromium and heavy metals in surface water, industrial wastewater (such as electroplating wastewater), and water quality at sewage plant inlets and discharges.

Instrument Features:

● Low waste liquid. The waste liquid volume is only 1.1L per month.

● Low reagent consumption. No need to change reagents for a month, greatly reducing the cost of hexavalent chromium measurement.

● The HMA-Cr6 hexavalent chromium heavy metal detector uses automatic calibration to ensure more accurate measurements.

● The HMA-Cr6 hexavalent chromium heavy metal detector features an automatic backwash sample filter, cleaning automatically after each test to ensure more accurate measurements and reduce manual maintenance.

● The HMA-Cr6 hexavalent chromium heavy metal detector features high and low range modes, automatically switching ranges and diluting automatically.

● HMA-Cr6 hexavalent chromium heavy metal detector features a Chinese menu, making it more suitable for Chinese users.

● The HMA-Cr6 Hexavalent Chromium Heavy Metal Rapid Detector uses a 5.7" color LCD touchscreen, making operation and display more intuitive.