Hanna HI-721 Iron Checker Handheld Colorimeter 0.00 to 5.00 ppm Range

Description HI-721 High Range Iron Handheld Colorimeter – Checker®HC About 6.3% of the earth’s crust is made of iron with 43% of this amount held in the soil. As a result, iron is naturally present in most water supplies. Left in the water, iron will not only stain pipework and swimming pool surfaces, or poison aquatic life, it will also affect the water taste and cause problems with animal feed lines. Testing should therefore form an important part of any water monitoring process – particularly if you are checking your pool, watching the quality of water in your fish tank, or needing to monitor water run-off. Key features of HI-721 Accurate and easy to use Phenanthroline method Accuracy ±0.04 mg/L (ppm) 0.01 mg/L (ppm) resolution Designed to work with Hanna reagents Large easy to read digits Auto shut-off Fits into the palm of your hand Specifications Range 0.00 to 5.00 ppm (mg/L) Resolution 0.01 ppm (mg/L) Precision 2% of reading ±0.04 ppm (mg/L) @ 25°C 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 2 minutes of non-use and 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 EPA Phenantroline method 315B, for natural and treated waters.   Click for more details