Another great checker from Hanna By lachapr on 11/24/2011
lachapr would recommend this product to a friend
This is my 4th checker and I love them all... I would recommend that anyone that is having issues with checker to watch the video that Hanna has put out. It is super easy to use and very accurate in my testings.
Most Compliated Hanna So Far By David on 11/22/2011
David would recommend this product to a friend
I have other Hanna Checkers..this one took a bit longer to get in the groove with. It does require RO/DI water but if you dont use that you will have other problems anyway and will also clearly need the phosphate checker! The nature of the science behind this test makes it more complicated. I believe it is worth the steps and carefully measuring out the small sample size. Just follow the directions and its a slam dunk.
Better than counting drops By Roger on 11/2/2011
Roger would recommend this product to a friend
As stated before you are only testing 0.1 ml of your water sample so you have to make sure you are accurate. Also, if you don't have a RO/DI source, or cannot confirm the quality of your RO/DI water it could be an issue. However, if you make accurate measurements, and you know the quality of your RO/DI water, you get accurate, repeatable results.
For me, it has worked much better than any test kit I’ve used.
Ok but not great By SaltCritters.com on 10/30/2011
SaltCritters.com wouldn't recommend this product to a friend
We have all the Hanna test kits and the others work great. But this test is all over the place. We did 3 tests in a row and each time it read something different. ended up with a 600, 550, and 475. Crazy
Great! Requires RO/DI water By ssgatbliss on 10/18/2011
ssgatbliss would recommend this product to a friend
The test requires Ro/DI water not distilled, accuracy with a syringe, and executing the directions properly. Other than that it's a decent test kit. If you don't have RO/DI go with Salifert or another trusted brand. I have the ALK and low Phosphate kits from Hanna as well. I would rate those a 9 out of 10 and the calc test a 7 out of ten due to the precise measurements and RO/DI water.
Good machine By Ryan on 9/26/2011
Ryan would recommend this product to a friend
The tester I have had all weekend and used it several times. I hae compared it the API tests and it is correlating well. The down side is the need for reagents and you must calibrate with RODI water but otherwise a workable little unit that helps take the guess work out of it.
Flawed Design By Mulberry on 9/24/2011
Mulberry wouldn't recommend this product to a friend
As noted by others, the dilution of 0.1 ml sample is problematic. I tried it with the RODI water and distilled water (from the pharmacy) and I get readings off by about 50-100 mg/L too high. It's not usable for me. I wouldn't recommend it. The phosphate test works for me.
Too difficult to use, wait for an upgrade By jamie on 9/8/2011
jamie would recommend this product to a friend
First off, I love my pH checker from Hanna. I was hoping for the same ease of use from the calcium checker. However, it requires the use of testing water that is basically 0 ppm of Ca. Anything else and the test fails. Also, the requirement for the sample is to accurately measure 0.1 ml of your tank water and then one of the reagents is a powder. I would give Hanna more time to figure this one out before buying.
I would hold on this. By Dan on 9/4/2011
Dan would recommend this product to a friend
it requires extremely pure water (DI/distill lab grade) and accurate measuring of 0.1ml (yes one tenth ml) of your sampl tank water. If you can get both right test will work. If your DI will have slight trace of CA you'll be way off.. according to Hanna even 2ppm of CA in DI is not acceptable. I would wait for Hanna address these issues.
Easy to use and gives accurate readings By Tom on 8/24/2011
Tom would recommend this product to a friend
Easy to use and gives accurate readings. 2 things to note are:
- Requires DI water
- Reagent B is a powder
Not very happy about using a powered reagent, But other than that, I'm very happy with my purchase.