Category: Chromium (Cr)

Chromium (Cr)

Chromium (Cr) is a naturally occurring substance in water. However, industrial wastewater can contain toxic forms of hexavalent chromium such as chromate and dichromate. This needs to be monitored and removed if necessary to maintain environmental water standards.

  • Chromium Analyzer | Heinrich Proch

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    Chromium Analyzer Heinrich Proch Overview

    The Chromium Analyzer Heinrich Proch can perform continuous analysis of metals, such as Chromium (Cr), and many other parameters in water. Technologies employed are colorimetric (photometric) and ion-selective electrodes (ISE). Direct measurements, standard addition, and titration support the ideal measurement strategy. The robust design and high-quality parts of the Chromium Analyzer guarantees a long lifetime and minimum maintenance efforts. Low consumption of reagents and very high reagent stability ensures person-free operation. Automated calibration and cleaning steps support this goal.

    Chromium Analyzer Heinrich Proch Features


    Natural sources. Chromium is widely distributed in the Earth’s crust. It can exist in valences of +2 to +6. In general, food appears to be the major source of intake.
    Industry. Chromium is seldom used alone; as an additive, it endows alloys or materials with new properties: strength, hardness, permanence, hygiene, color, and resistance to temperature, wear, and corrosion.
    Drinking water. A guideline value of 0.05 mg/liter of total chromium is recommended in drinking water.
    Toxicity. In humans and animals, Cr(III) is an essential nutrient. The overall toxicity, carcinogenicity, and general hazards of chromium are highly related to chemical speciation, the hexavalent chromium compounds being more toxic than the trivalent compounds.


    Metal is measured as a chelate complex between metal ions in the wastewater and sensitive spectrophotometric reagent dye. Change of the intensity of the visible light throughout the cuvette containing formed metal complex is directly proportional to metal concentration.


  • Online UV-Vis Spectrometer | Spectro::lyser V3

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    Online UV-Vis Spectrometer  Spectro::lyser V3 Overview

    The Spectro::lyser V3 is a next-generation high-performance online water quality monitoring. With the aid of extensive research on industry needs and using the latest technology, the Spectro::lyser V3 was innovatively designed. The Spectro::lyser™ UV-Vis monitors depending on the application an individual selection of TSS, TS, turbidity, color, TOC, DOC, BOD, COD, NO3-N, NO3, chloramine, HS-, O3, CLD, Chl-a, BTX, UV254, fingerprints, spectral alarms, and temperature.

    Online UV-Vis Spectrometer Features

    • Measuring principle: UV-V is spectrometry over the total range (190-750 nm)
    • Webserver onboard - IoT enabled
    • No user software is needed to configure the probe
    • Communicates directly with your mobile device via WLAN
    • Unlimited number of parameters possible
    • 8 GB onboard memory - capacity for logging data for many years
    • Improved optical performance - revolutionary precision
    • Fast measurement interval - 10 seconds
    • Extremely power efficient - sleep mode for low energy consumption
    • Multiparameter probe with 1 mm, 5 mm, or 35 mm optical path length, ideal for wastewater, surface water, and drinking water
    • Long term stable and maintenance-free in operation
    • Factory precalibrated, local multi-point calibration possible
    • Automatic cleaning with compressed air or brush/ruck::sack

    Waste-Water Datasheet
    Drinking-Water Datasheet