- More accurate than chemical test kits, less expensive than professional testing
- Single-button operation for ease of use
- Uses EPA-approved DPD method 4500-Cl G, for uses with these requirements
- Large LCD screen for readability
- Auto shut-off to extend battery life
Hanna Instruments HI 711 Checker HC Handheld Colorimeter, For Total Chlorine
|Price:||$99.97 + $5.02 shipping|
Specifications for this item
|Brand Name||Hanna Instruments|
|Number of Items||1|
|Part Number||HI 711|
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The HI 711 is a portable meter for measuring chlorine in natural, waste, recreation and drinking waters.
The HI 711 bridges the gap between less accurate chemical test kits, and expensive professional test instrumentation. To use, zero the instrument with your water sample, then add the reagent. Place the vial into the checker, press the button, and read the results within seconds.
The meter has a range of 0.00 to 3.50 ppm (mg/L) + or – 3% of the reading (+ or – 0.03 ppm (mg/L) at 25 degrees C, with resolution 0.01 ppm (mg/L). It operates in temperatures from 0 to 50 degrees C (32 to 122 degrees F)/RH max 95%. The device operates on one 1.5V AAA battery, with an auto-off function that shuts off the device after two minutes of non-use. Dimensions are 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”), with weight 64 g (2.25 oz.).
Chlorine is a common disinfectant for water, and ensuring proper levels is important in many situations. Chlorine colorimeters are used for monitoring quality control in many applications such as swimming pools, sanitation, and drinking water.
Hanna Instruments manufactures a wide variety of analytical instrumentation, including pH meters, multi-parameter meters, electrodes, chemical reagents, and buffer solutions. Founded in 1978, Hanna is headquartered in Woonsocket, RI, with subsidiaries in 32 countries. Hanna Instruments holds many firsts in the field of analytical instrumentation, including a pH electrode with a built-in temperature sensor, an electronic pocket-sized pH tester, and a replaceable electrode pH pocket tester. To ensure the quality of its products, Hanna is a vertically integrated manufacturer and does not subcontract any part of its manufacturing.
What’s in the Box?
- Two sample cuvettes and caps
- Six powder reagents for free chlorine
- One 1.5 V battery
Top Customer Reviews
With two cuvettes, the free chlorine checker can be used for both free and total chlorine as well as other 525nm based tests. I tried this with free chlorine and total chlorine tests and think it is an excellent alternative to Taylor test kits. The Taylor kits (K2005 in particular) require matching light shades of pink to determine chlorine levels. Even holding up to light is not always conclusive and the measurement tolerance is roughly ±0.5 PPM.
This meter yields an easy to read number. All the difficulties of pouring the reagent and setting the timer are eliminated if the user simply takes two samples, uses one as the control, and then manually times the wait period (1 minute for free chlorine, 2.5 minutes for total chlorine). Just before the time is completed, put in the unreacted sample, let the unit take the baseline measurement, and then insert the reacted sample and let the checker do its magic. I compared the results to the Taylor test kit and obtained relatively similar readings. The Taylor test kit I have is quite old and the reagents are well past expired (thus the reason for buying this checker). I also used this checker with the Taylor reagents and also obtained relatively similar readings. I purchased 100 test packs for both free and total chlorine so I am set for a while.Read more ›
Most Recent Customer Reviews
Great little tester. Seems accurate and its a breeze to use. If I lost the one I bought I would not hesitate to buy another.Published 5 months ago by H. Langley
This instrument works well. I use it to check the residual chlorine in my potable rainwater collection tank.Published 21 months ago by Glenn Bowman