EnviroLyzer™ Cr

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EnviroLyzer™ Cr

On-line Chromium Analyzer

The EnviroLyzer™ Cr has been developed in order to set new standards in automatic, compliant, on-line monitoring of Cr(VI) or total Cr in water, exceeding today’s most stringent regulations for permissible chromium levels. The EnviroLyzer™ Series are essentially on-line colorimeters for water applications, harnessing many features and techniques that were originally developed for our industrial, state of the art process analyzers. The flexible analyzer mainframe allows a perfect on-line duplicate of any standard/laboratory wet-chemical method, with an excellent analytical performance.

Chromium shows a complex behavior in drinking water systems or natural waters. The total Cr configuration of the EnviroLyzer™ Cr is the ideal solution for situations where one wishes to discriminate between hexavalent and total chromium levels. The analyzer processes incoming samples with concentrated acids at high temperature by means of a compact oxidation vessel with a reflux-cooler mounted on top, neatly integrated into the analyzer housing.

AppliTek’s proprietary controller-database software is used in the industrial panel PC of the EnviroLyzer™ Series. The fully integrated software platform comes standard with every analyzer as the human interface but also features a host of functions specifically designed for industrial monitoring needs such as fast data acquisition, industry standard connectivity and various data exchange to supervision possibilities.


On-line, automatic colorimetric measurements

Available as standard Cr(VI) configuration or with built-in sample digestion for total Cr configuration

Minimalistic design: small footprint, less complexity

Complete separation between electronics and wet part

Smart features and add-on units reduce down-time and unnecessary checks substantially

Up to six (6) sampling points possible

Incorporated industrial panel PC with AppliTek controller software

Extended data communication and exchange features

Analysis method
Conform with ASTM 3500-Cr B
Chromium(VI): colorimetric measurement using diphenylcarbazide (DPC) color solution
Total chromium: colorimetric measurement using DPC color solution after digestion with oxidation solution

Standard measuring ranges
One single range, factory set:
0 – 50 µg/L Cr(VI) or
0 – 500 µg/L Cr(VI)
Note: higher ranges available by sample dilution

Cycle time
Cr(VI): 10 minutes
Total Cr: ≤ 20 minutes

Factory calibrated (2-point)

Automatic, free adjustable sequence

Detection limit
Cr(VI): better than 1 µg/l (range 0 – 50 µg/L)
Total Cr: better than 5 µg/l (range 0 – 50 µg/L)