HANNA Chromium VI Low Range Handheld Colorimeter
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.
- 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
- Water Quality
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.
1. ‘Zero’ the Checker®HC with your vial & water sample inside
2. Take the vial out and add your reagent
3. Place your vial into your Checker®HC
4. Press the button and read the results
Battery powered – Allows use away from a power source. Batteries are included with all battery operated products.
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.
|Range||0 to 300 ppb|
|Accuracy (@25°C/77°F)||±2 ppb ±4% of reading|
|Light Source||LED @525 nm|
|Light Detector||Silicon photocell|
|Method||Adaptation 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 Supply||Battery - 1 x 1.5V AAA|
|Power Auto Off||After 10 min. of inactivity|
|Environment||0 to 50°C (32 to 122°F); RH max 95% non-condensing|
|Dimensions||81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”) Weight 64 g (2.25 oz.)|