very fast and high precision By Joe on 7/20/2013
Joe would recommend this product to a friend
This Hanna checker allows you to measure alkalinity very quickly and easily. It can be made even easier/quicker if you have a 1 mL pipettor. The measurements are very reproducible (high precision), but accuracy is harder to determine. For example, I made up some Red Sea Pro salt mix at 1.025 SG and measured alk with Hanna checker and the Red Sea Pro Alk kit. The results from two measurements were:
Hanna: 4.50 and 4.52 meq/L
Red Sea: 4.15 and 4.15 meq/L
These are significant differences, but the Hanna Check is closer to the expected value of ~4.4-4.53 meq/L. Of course, there is no guessing the end titration point with the Checker either. I've retired the Red Sea kit.
Very Accurate Tester By Kash on 7/15/2013
Kash would recommend this product to a friend
I used to use the Salifert Alkalinity test & found it hard to read the color change accurately but ever since i switched to the hanna alkalinity tester it has become very easy to precisely determine the value. The test does take around the same time to complete as the Salifert kit but there is no comparison with the Hanna digital readout. Great Product!
Easy and accurate By Thereeferman on 6/18/2013
Thereeferman would recommend this product to a friend
No more worrying about test results. I am now confidant or my tank's alk levels. I like this meter even better than the phosphate checker, which I also highly recommend.
Accurate, easy to use By Brandon on 6/1/2013
Brandon would recommend this product to a friend
Digital is the way to go. One reagent to add and you get a very accurate result. Tested twice in a row to see if the number would change even by 1ppm but it was identical. Wish you could change it to dkh vs ppm. Makes me do one more conversion.
GREAT PRODUCT. By TQN on 5/27/2013
TQN would recommend this product to a friend
Easy to use and reliable,accurate...
easy and accurate By hunt flint on 4/24/2013
hunt flint would recommend this product to a friend
much easier than color charts.digital readout gives more reliable results for aquarium log,makes keeping records more feel more useful.
Very Simple By Larry on 4/5/2013
Larry would recommend this product to a friend
This is one of the easiest checker I have ever used.
No More Confusing Colors By Thomas on 3/18/2013
Thomas would recommend this product to a friend
I love this thing. I have been using the Hanna Alk checker for five months now and I still love it. My old Alk test was hard to delineate between the colors. With the digital read out there are no more questions of the results. The process is easy and fast. It is well worth the investment.
Great Product By Mark on 3/9/2013
Mark would recommend this product to a friend
It does not get any easier to check alkalinity. No more guessing what the color is. I would recommend to any reefer.
Easy to Use and Accurate By Miles on 2/13/2013
Miles would recommend this product to a friend
This tester is super easy to use and results are fast and accurate. I have always had a hard time trying to compare colors on other test kits, the Hanna Checkers take all of the guesswork out of it and give you an actual number.
hands down the best alk tester on market By BK on 2/6/2013
BK would recommend this product to a friend
Love this test kit for its simplicity and digital readout. You must do a simple calculation to get DKH reading (multiply X 0.056) and then you are set. Used red sea alk before but always had some gray areas with the titration.
best alk tester By Gary on 2/3/2013
Gary would recommend this product to a friend
Fast, accurate, repeatable, can't do any better.