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  • หน้าแรก>>Products>>อุปกรณ์วัดChecker>>อุปกรณ์วัด Checker HC Handheld Colorimeter>>อุปกรณ์วัดฟลูออไรด์ (Checker®HC Handheld Colorimeter – Fluoride High Range)
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    อุปกรณ์วัดฟลูออไรด์ (Checker®HC Handheld Colorimeter – Fluoride High Range)

    HI 739

    Checker®HC Handheld Colorimeter – Fluoride High Range

     

    •  Easier to use and more accurate than chemical test kits

        SPADNS method
    ±0.5 ppm ± 5% of reading accuracy
    Large, easy to read digits
    Auto shut off

    • Dedicated to a single parameter

        Designed to work with HANNA’s 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

     

    Fluoride is one of the very few chemicals that have been shown to cause significant effects in people through drinking-water. Fluoride has beneficial effects on teeth at low concentrations in drinking-water, but excessive exposure to fluoride in drinking-water, or in combination with exposure to fluoride from other sources, can give rise to a number of adverse effects.

    Water fluoridation is the controlled addition of fluoride to a public water supply to reduce tooth decay. Fluoridated water operates on tooth surfaces: in the mouth it creates low levels of fluoride in saliva, which reduces the rate at which tooth enamel demineralizes and increases the rate at which it remineralizes in the early stages of cavities.

    A 1994 World Health Organization expert committee suggested a level of fluoride from 0.5 to 1.0 mg/L, depending on climate. Bottled water typically has unknown fluoride levels, and some domestic water filters remove some or all fluoride.

    The HI 739 Checker®HC is simple to use. In one vial add 2 ml of Reagent A and 8 ml of Reagent B; gently invert 5 times, and wait 1 minute, then zero the instrument with the vial. After zeroing, remove the vial and add 1 ml of sample, gently invert 5 times, wait 1 minute, then insert the cuvette into the HI 739 Checker®HC and press the read button for results.

    Order Information:
    HI 739 Checker®HC is supplied with sample cuvettes with caps (2), reagents for 4 tests, syringe with tip, pipette, battery and instructions.

     

    Specifications

    Range   0.0 to 20.0 ppm
    Resolution   0.1 ppm
    Accuracy @ 25°C   ±0.5 ppm ± 5% of reading
    Light Source   LED @ 575 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 two minutes of non-use and ten seconds after reading
    Dimensions   81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
    Weight   64 g (2.25 oz.)
    Method   adaptation of SPADNS method
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    ต. คลองหลวง อ.คลองหลวง จ. ปทุมธานี 12120
    โทร. 081-847-6768, 02-191-3928 แฟ็กซ์. 02-191-3929 


    คุณโทณิวัฒน์ 085-811-4779 , คุณนารีรัตน์ 085-814-9653

    E-mail : info@highents.com , IDline: @alltestkit

     

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