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Product Details
Free Chlorine Checker

Free Chlorine Checker

Free Chlorine Checker
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More accurate and easier to use than chemical test kits!

EPA approved DPD method Accuracy ±0.03 ppm (mg/L) ±3% of reading
0.01 ppm (mg/L) resolution (250 points) Large, easy to read digits. Auto shut-off.

Hanna HI 701 Checker Colormeter/Photometer is supplied with:
· (2) sample 10 ml cuvettes with caps
· (6) powder reagents for Total Chlorine
· (1) 1.5V AAA battery and instructions.
Small Size, Big Convenience

Weighing a mere 65 g (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.


Chlorine is the most common water disinfectant. Therefore the monitoring of chlorine is crucial in applications such as swimming pools and spas, fruit and vegetable sanitation, disinfection and drinking water. Serious health and safety risks can be avoided by monitoring this crucial parameter. Chemical test kits are not very precise and only give 5 to 10 points resolution, while professional instrumentation can be expensive, costing hundreds of dollars, and can be time consuming to both calibrate and maintain. The HANNA HI 701 Checker®HC’s is accurate and affordable. This Checker®HC portable handheld colorimeter features a resolution of 0.01 ppm (250 points) and 3% ±0.03 ppm (mg/L) accuracy of reading. Checker®HC also uses an EPA approved DPD method. The contoured style of these Checker®HC’s fit in your palm and pocket perfectly and boast a large LCD that 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 Checker is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagent. Last, Place the vial into the Checker®HC, press the button and read the results. It’s that simple and easy!

Range 0.00 to 2.50 ppm (mg/L)
Resolution 0.01 ppm (mg/L)
Precision 3% of reading ±0.03 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 EPA approved DPD method Standard Method 4500-Cl G.

13.5L x 9.5W x 4.5H

Replacements Reagents:
HI 93701-01 Free Chlorine Reagents -100 pk
HI 701-25 Free Chlorine Reagents -25 pk
HI 93701-01D NEW Free Chlorine Powder Dispenser -100 tests

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