Description
The HANNA HI 721 CheckerHC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and only give 5 to 10 points resolution while professional instrumentation can cost hundreds of dollars and can be time consuming to calibrate and maintain. The HANNA HI 721 CheckerHC is accurate and affordable with immediate results.
The new HI 721 CheckerHC portable handheld colorimeter features a resolution of 0.01 ppm (500 points) and 0.04 ppm 2% of reading accuracy. The HI 721 CheckerHC uses an adaptation of Standard Method 315 B.
The contoured style of this CheckerHC fits in your palm and pocket perfectly and the large LCD is easy to read. The auto shut-off feature assures the battery life will not be drained if you forget to turn it off.
The HI 721 CheckerHC is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the HI 721 CheckerHC, press the button and read the results. Its that easy.
Order Information: HI 721 CheckerHC is supplied with sample cuvettes with caps (2), powder reagents for iron (6), battery and instructions.
Specificationn :
| Range | 0.00 to 5.00 ppm (mg/L) | |
| Resolution | 0.01 ppm (mg/L) | |
| Accuracy @ 25C | 0.04 ppm 2% of reading | |
| Light Source | LED @ 525 nm | |
| Light Detector | silicon photocell | |
| Environment | 0 to 50C (32 to 122F); RH max 95% non-condensing | |
| Battery Type | (1) 1.5V AAA | |
| Auto-off | after three 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 the EPA Phenantroline method 315 B, for natural and treated waters. |
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