- Alkalinity DKH Colorimeter HI772 Hanna Checker - Marine Water
Why does BRS recommend this?
The Hanna Alkalinity checker is an awesome little tool that now will give results in DKH values that are much more common in the aquarium hobby. It will also give you accurate easy to read results with the large LCD display. We like the repeatable results and ability to purchase replacement reagents when needed. The biggest key with Hanna checkers is keeping the vials nice and clean for consistent results.
Uses Hanna HI772-26 liquid reagents
Three simple steps to results. The Hanna Alkalinity Checker bridges the gap between simple chemical test kits and professional instrumentation. Accurate, affordable and easy to use. First, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the Hanna Alkalinity Checker, press the button and read the results. Done.
Easier to use and more accurate than chemical test kits
Chemical and titration test kits have limited accuracy and very hard to repeat that usually will rely on the human eye and lighting to determine the reading. Hanna's HI772 Alkalinity Checker is much more reliable with their single light source with a fixed wavelength that will give the electronic checker the ability to make repeatable measurements time after time. Similar measurement devices are used by labs and large-scale testing facilities for their dependable and precise measurements.
Dedicated to a single parameter
Designed to work with HANNA's liquid reagents. Uses 10 mL glass cuvettes.
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.
- Range: 0.0 to 20.0 dKH
- Resolution: 0.1 dKH
- Precision: ±0.3 dKH ±5% of reading
- Light Source: LED @ 610 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 10 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: Colorimetric method
- HI772 Checker
- 2 sample cuvettes with caps
- 1 bottle of alkalinity reagent hi772-26
- 1 ml syringe and tip
- quick start guide.
Quick. Easy. Accurate By Allan on 7/19/2018Allan would recommend this product to a friendVery simple to use. I was orginally using an API test kit to Test for dkh but it was always difficult to get exact readings. This is quick, simple & fast. Wish all Hanna checkers came with liquid reagents.
Awesome!!! By Zach C on 7/13/2018Zach C would recommend this product to a friendLove this little gadget! Super simple and fast to use. Highly recommend this for any reefer.
Simply the best By Dustin on 6/30/2018Dustin would recommend this product to a friendI've used red sea, salifert and others and realized how much I hated them after switching to Hanna. No color change, eye strain and guessing if it's blue, blueish green, green. You get a digital reading, simple and easy. All of my testing is done with Hanna checkers
Easy to use By Evelio on 5/6/2018Evelio would recommend this product to a friendThis is by far the easiest alkalinity test kit, I have ever used. It’s worth it.
Completely inaccurate By Hanna hater on 3/31/2018Hanna hater wouldn't recommend this product to a friendHad one for 2 weeks and was getting daily swings in alk. One day was 7.5, the next 8.2.
I decided to run multiple tests on the same sample. This was done in about a10 minute span.
Here are the Results. Salifert test results ware 8.0.
Returned to brs.
This thing could not be trusted.
Would rate 0 stars if i could
Best Purchase I have made By Chris B on 3/24/2018Chris B would recommend this product to a friendThis is by far the best test kit I own. Quick, easy and reliable. Wish all the other Hanna Checkers came with the liquid regent.
Love it. By Allen on 3/16/2018Allen would recommend this product to a friendSo fast and easy to use.
100% recommended to anyone By Hector on 3/14/2018Hector would recommend this product to a friendthe best investment you can make after struggling with the tests you have to be looking for the color to get a result
Awesome By RussC on 3/5/2018RussC would recommend this product to a friendLove it. Much simpler than color testing. Easy, fast and spot on. Consistent every time. Even when doing multiple tests back to back.
Good but came broken By Lukey on 2/26/2018Lukey would recommend this product to a friendThe product is good overall but the syringe it comes with came broken.
Worth Every Penny By Mike on 2/24/2018Mike would recommend this product to a friendLet me just say, this Hanna Checker is worth its weight in gold. From testing being under 2 minutes from start to finish, to the reliable accuracy, and ease of reading the results, this checker has helped me dial in my dosing amounts for my reef and in turn has left me with a very stable Reef Tank with tons of Growth. Id definitely recommend this if youre looking for a quick and easy way to test alkalinity (a.k.a. one of the most important parameters to be kept stable in a reef).
Best investment ever!!!! By Jason on 2/23/2018Jason would recommend this product to a friendThis is simple to use and accurate compared to the salifert kit, I compared them to the ALK salifert and it was off by 6. Very happy with this, get it now don't hesitate!
The spec says that the accuracy is +/-0.3 and +/- 5% of reading. So a reading of 10.0 could really be anywhere from 9.2 to 10.8. That's huge. Is that the spread of errors over many checkers and I could be lucky and get a good one, or is that the spread of measurement errors for any particular checker?
The dKH checker by Hanna is one if the easiest to use and just as accurate as all current hobby grade test kits for dKH currently available. Feel free to let us know if you have any further questions!
Hanna list a calibration kit specifically for the HI772. Do you carry this or will the one for the HI775 work?
How many tests will the included reagent perform.
This checker includes 25 tests. If you have any other questions, let us know!
Do you use the extra tip for the syringe just to fill the syringe with the reagent or do you fill the reagent to 1mill+extra tip full into the vial? thanks!
The tip should be attached to the syringe prior to drawing the reagent fluid. You will want to draw the plunger to the 1mL mark, and the actual fluid will not actually be drawn into the syringe, but will just be drawn into the tip. This ensures more consistent dosing, and avoids fluid fouling the syringe portion.
Hope this helps!
What the difference from this an the HI775?
This checker includes a tip with the syringe . Do I NEED to use three tip to get the properly calibrated reading. Or can I use the 1ml marking on the syringe
While there are those that do not use the tip for drawing reagent, the manufacturer does specifically recommend using the tip for the best consistency and accuracy, and we recommend following their directions.
Have a great day!
Will they provide a new reagent for this new HI772 Alk Checker (dKH) or does the previous HI755-26 reagent work?
This checker will use the same reagent as the HI755-26. Feel free to let us know if you have any further questions!