Clearance Sale: NOS (New Old Stock) Brand New Never Used. Meter Tested and Works.
May Require 1 AAA battery.
Reagents or Calibration Solutions May Be Out Of Date. New reagents and consumables can be purchased on the factory web site at https://www.hannainst.com/hi721-iron.html
Phenanthroline method Accuracy ±0.04 ppm (mg/L) ±2% of reading 0.01 ppm (mg/L) resolution (250 points)Large, easy to read digits Auto shut-off.
Dedicated to a single parameter
Designed to work with HANNA's powder reagents Uses 10 mL glass cuvettes.
Small Size, Big Convenience
Weighing a mere 65g (2.3 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.
Industrial, ground and treated waters, mining leachate monitoring and agricultural irrigation water.
ACCURATE AND AFFORDABLE IRON MEASUREMENT
About 6.3% of the earths crust is made of iron, of which 43% is in soils. The analysis of iron is often performed to monitor ground water and irrigation waters as a gauge of corrosion from industrial settling, and as an indication of the effectiveness of treatment from mining leachate. The HANNA HI 721 Checker®HC 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 Checker®HC is accurate and affordable with immediate results. The new HI 721 Checker®HC portable handheld colorimeter features a resolution of 0.01 ppm (250 points) and 2% ±0.04 ppm accuracy of reading. The HI 721 Checker®HC uses an adaptation of Standard Method 3500-Fe B. The contoured style of this Checker®HC 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 Checker®HC 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 Checker®HC, press the button and read the results. It?s that easy.
|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 read|
|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 Standard Method 3500-Fe B.|
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