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With the Hanna Free Chlorine Checker you can check for chlorine at the touch of a button and get instant results.
Chlorine is the most commonly used water disinfectant chemical and is used in wastewater treatment plants and swimming pools as well as in both industrial and laundry bleaches. As such it can be very prevalent in natural water systems. Free chlorine is very toxic to fish and aquatic organisms, even in fairly low concentrations. However, once added to water it quickly reacts with other substances to form combined chlorine.
The Free Chlorine Pocket Checker measures free Chlorine only. The Total Chlorine Pocket Checker measures both free and combined forms of chlorine. These great value pocket checkers provide invaluable data regarding water quality and safety.
* Accuracy +/- 0.03 mg/L (ppm)
* 0.01 mg/L (ppm) resolution
* Designed to work with Hanna DPD reagents
* Large easy to read digits
* Auto shut-off
* Comes complete with two sample cuvettes, one black cuvette cap, starter pack of six reagents, one 1.5V AAA battery and full working instructions
Range: 0.00 - 2.50 ppm (mg/L)
Resolution: 0.01 ppm (mg/L)
Precision: 3% of reading +/- 0.03 ppm (mg/L) at 25 degrees Celcius
Light Source: LED at 525 nm
Light Detector: Silicon photocell
Environment: 0 - 50 degrees Celcius (32 - 122 degrees Fahrenheit); RH max 95% non-condensing
Battery Type: (1) 1.5V AAA
Auto-off: After 2 minutes of non-use and after read
Dimensions: 81 x 61 x 37.5 mm
Weight: 64 g (2.25 oz)
Method: EPA approved DPD method Standard Method 4500-Cl G.