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    อุปกรณ์วัดโครเมียม (Checker®HC Handheld Colorimeter – Chromium VI High Range)

    HI 723

    Checker®HC Handheld Colorimeter – Chromium VI High Range


    • Easier to use and more accurate than chemical test kits

        Diphenylcarbohydrazide method
    Accuracy ±5 ppb ±5% of reading
    1 ppb (µg/L) resolution
    Large, easy to read digits
    Auto shut off

    • Dedicated to a single parameter

        Designed to work with HANNA’s powder reagents
    Uses 10 mL glass cuvettes

    • Small size, big convenience

        Weighing a mere 64 g (2.25 oz.), the Checker®HC easily fits
    into the palm of your hand or pocket
    Use for quick and accurate on the spot analysis
    Single button operation: zero and measure
    Operated by a single AAA battery

    • Ideal for Water Quality


    There are two natural forms of ionic chromium, the hexavalent ion, Cr (VI) and the trivalent Cr (III). Cr (III) is much less toxic than Cr (VI) and seldom found in potable waters. Cr (VI), however, is toxic to humans and is found in water. Even though the toxic effects from Cr (VI) in drinking water are not well documented, it is a suspected carcinogen. The maximum permissible level or Cr (VI) allowed to be released into the waterways is 50 ppb. Its level in drinking water is normally much lower and a lever higher than 3 ppb is suggestive of industrial pollution.

    By monitoring this parameter with the HANNA HI 723 Checker®HC, serious health and safety risks can be avoided.

    The HI 723 Checker®HC is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagent, shake vigurosly for 10 seconds. Last, place the vial into the Checker®HC, press the operational button for about 3 seconds and the display will show the countdown prior to the measurement or, alternatively, wait for 6 minutes and press operational button. When the timer ends the meter will perform the reading. The Checker®HC displays concentration in ppb of chromium VI. It’s that easy.


    Order Information:
    HI 723 Checker®HC is supplied with sample cuvettes with caps (2 ea.), power reagents for chromium VI HR (6), battery and instructions.



    Range   0 to 999 ppb
    Resolution   1 ppb
    Accuracy @ 25°C   ±5% of reading ±5 ppb
    Light Source   LED @ 525 nm
    Light Detector   silicon photocell
    Environment   0 to 50°C (32 to 122°F); RH max 95% non-condensing
    Battery Type   (1) 1.5V AAA
    Auto-off   after ten minutes of non-use
    Dimensions   81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
    Weight   64 g (2.25 oz.)
    Method   adaptaion of the ATSM, Manual of Water and Enviornmental Technology, D 1687-92, Diphenylcarbohydrazide method
  • Requesting a Quotation and Ordering Products

    131 Thailand Science Park. Innovation Cluster 1 Building,

    Klong 1, Klong Luang, Pathumthani 12120 Thailand. 

    Tel.  02-191-3928 Fax 02-191-3929

    For more information please contact 081-847-6768 (Ms. Nareerat) IDLine: @alltestkit

    E-mail :


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