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Hanna HI-749 Chromium VI Low Range Handheld Colorimeter, Checker®HC

In Stock 2 Items available

HI-749

Ideal for water quality testing, the HI-749 Checker is a simple, accurate, and cost effective way to measure low ranges of Chromium VI in fresh water.

Checker®HC is supplied with reagents for 6 tests. Use code HI-749-25 (25 tests) for future purchases.

0 to 300 ppb
Ideal for Water Quality Testing
Chromium

£80.20 (exc.VAT)
£96.24 (tax incl.)
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Full Description Specification Manuals

Ideal for water quality testing (not suitable for cold water aquarium or salt water marine tanks)

The HI-749 Checker is a simple, accurate, and cost effective way to measure low ranges of chromium VI in fresh water.

Designed as a more accurate alternative to chemical test kits, the HI-749 provides quick, accurate results in four easy steps.

The HI-749 uses an adaptation of the ASTM Manual of Water and Environmental Technology D1687-92, Diphenylcarbohydrazide method. The reaction between chromium VI and the reagent causes a purple tint in the sample.

Features:

  • Small palm-sized design
  • Accurate from ±2 ppb ±4% of reading
  • Dedicated to a single parameter
  • Uses a single AAA battery
  • Auto Power Off after 10 minutes in inactivity
  • Built-in timer for timed reaction readings

Ideal for:

  • Water Quality
  • Education
  • Plating
  • Environmental

Order Information:

The HI-749 Checker®HC is supplied with 2 cuvettes and caps, reagent starter kit (6 packets of chromium VI LR reagent - re-ordering information HI-749-25 x 25 tests), 1 x 1.5V AAA battery, and an instruction manual.

Also available: Calibration set HI-749-11.

Four steps. One click. Instant Readout.

Step 1 1. ‘Zero’ the Checker®HC with your vial & water sample inside

Step 2  2. Take the vial out and add your reagent

Step 3 3. Place your vial into your Checker®HC

Step 4  4. Press the button and read the results

Use HI-749-25 Reagents with the Chromium VI LR Handheld Colorimeter - Checker®HC x 25 tests.

Use HI-749-11 Calibration Check Set with the Chromium VI LR Handheld Colorimeter - Checker®HC.

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Range0 to 300 ppb
Resolution1 ppb
Accuracy (@25°C/77°F)±2 ppb ±4% of reading
Measurement MethodColorimetric
Light SourceLED @525 nm
Light DetectorSilicon photocell
MethodAdaptation of ASTM Manual of Water & Environmental Technology, D1687-92, Diphenylcarbohydrazide method. The reaction between chromium VI and the reagent causes a purple tint in the sample.
Power SupplyBattery - 1 x 1.5V AAA
Power Auto OffAfter 10 min. of inactivity
Environment0 to 50°C (32 to 122°F); RH max 95% non-condensing
Dimensions81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”) Weight 64 g (2.25 oz.)