Good idea, bad instructions!! By Jason on 4/18/13

Jason wouldn't recommend this product to a friend

I love the idea of a digital cal. checker.
However, after following the instructions in detail I could not get a good reading.

Had to go to the internet to find out what the problem was.

YOU MUST USE DISTILLED WATER WITH THIS TESTER TO MAKE IT WORK!!!!!!
Checker is inaccurate due to being overly complex and requiring absolutely pure RO/DI By Adam on 4/16/13

Adam wouldn't recommend this product to a friend

I have had this checker for close to a year now and have finally completely given up on it. It was a waste not only on the checker itself but also on the $20 reagent packs. I have never gotten the same value twice from it. Using the same RO/DI water and sample water. I follow the exact same test procedure every time. My Hanna alk checker gives the same number on repeat tests and is invaluable. But the Ca checker seems to just randomly choose a number. This i believe is due to the 1/10 ratio being used. Perhaps the checker would operate correctly if i used lab grade RO/DI but i am unwilling at this point to spend another cent on it.
Great Product By Mark on 3/9/13

Mark would recommend this product to a friend

Anything that makes testing easier is for me. I would absolutely recommend this product. I am not good at titration and can never tell when the end color is reached. This is a must for testing.
Complicated to use, but provides good accuracy By Miles on 2/13/13

Miles would recommend this product to a friend

This test took some practicing to get right. There are several steps involved in this test involving 2 separate reagents, RO water, and the sample. Ensure that the RO water you use in the first step is indeed at 0 TDS or you can very easily end up with an out of range reading (over 600). I was never good a titration in chemistry class, so this test while complicated gets rid of the frustration factor that comes with titration.
better than the alternatives, not as good as other hanna checkers By Gary on 2/3/13

Gary would recommend this product to a friend

You must have di water available, there are a lot of steps. Still better than the alternatives though.
I like Hanna Checkers, but the accuracy on this one doesn't seem up to par. By Chad on 12/15/12

Chad wouldn't recommend this product to a friend

I am a fan of Hanna Checkers, but my Calcium checker doesn't seem all that accurate. It is ~25-100 off from other test kits and I follow the directions meticulously.
Workd great for me By Dawn on 11/30/12

Dawn would recommend this product to a friend

I think it is a great tester!!! Mr saltwater tank recomends them tooo!!!!
Very handy By Aaron on 11/19/12

Aaron would recommend this product to a friend

I was hesitant about getting this tester as I have read some questionable reviews, but using it for almost six months now I love it. It is consistent, as long as it is used correctly with DI water. It is nice to read a number rather than judge a color.
seems to work By brad on 11/6/12

brad would recommend this product to a friend

i am happy with this checker went step by step and tested my water and showed 533ppm
Super easy By Rob on 10/3/12

Rob would recommend this product to a friend

Out of all the test I like this because u don't have to count drop by drop, super easy
Accurate if use good water By Edward on 9/29/12

Edward would recommend this product to a friend

So I knocked off a star because this should come with its own DI water (or BRS should sell the Hanna water). If you use the lab grade water, this thing is very accurate and easy to use. I can't say it is any better than Salifert, but having the digital readout is a plus. The one other thing I wish it came with was a little cloth to wipe the glass before putting it in the checker. I have one to clean glasses that I use and I think it would be easy to include that since the clarity makes a difference (same as all other Hanna Checkers).
Worked for me By MATTHEW on 9/24/12

MATTHEW would recommend this product to a friend

I found that I was getting accurate results if the directions were followed precisely. Not as easy to use as the alk tester.

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Good idea, bad instructions!! By Jason on 4/18/13

Checker is inaccurate due to being overly complex and requiring absolutely pure RO/DI By Adam on 4/16/13

Great Product By Mark on 3/9/13

Complicated to use, but provides good accuracy By Miles on 2/13/13

better than the alternatives, not as good as other hanna checkers By Gary on 2/3/13

I like Hanna Checkers, but the accuracy on this one doesn't seem up to par. By Chad on 12/15/12

Workd great for me By Dawn on 11/30/12

Very handy By Aaron on 11/19/12

seems to work By brad on 11/6/12

Super easy By Rob on 10/3/12

Accurate if use good water By Edward on 9/29/12

Worked for me By MATTHEW on 9/24/12

Write Your Own Review

You're reviewing: Hanna Checker Calcium Colorimeter