- 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
Instead of a single unit doing everything, each Hanna Checker is designed to perform a test for a single parameter. This allows the test to have greater precision while also making it easier to use overall.
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.
Very difficult to place battery By David on 2/22/2020David wouldn't recommend this product to a friendTaking the screw out to put in the battery is very difficult. I would never purchase this product and will try to return it. NOT WORTH THE TROUBLE.
Great results By David on 2/13/2020David would recommend this product to a friendMy reefing buddy just bought this test kit for me and I must say it’s amazing and the results are accurate tested it out on his 180 reef tank and it was dead on with the trident
Skeptical but love it By Scott on 12/20/2019Scott would recommend this product to a friendI was very skeptical of this, and looked at it on and off for years. I finally bought it and I love it, and it has been very accurate. I even occasionally double check it with the red sea alk test, and it's always very close. One thing I learned after doing some research, when you put water in this vial it makes a u shape. Make sure the bottom of the u touches the 10ml fill line, not the top.
Awesomeness and ease By Trey on 6/13/2019Trey would recommend this product to a friendThis product is so much more accurate than any titration based test. I check my alk DAILY.
Solid kit. Nice case for storage.
Reliable and repeated accurate results. Thanks guys!
I am not a robot(captcha)
Quick and accurate By Tom on 4/29/2019Tom would recommend this product to a friendDoesn't use packets of powder, yay! Hate those.
But this is a simple and quick test. No matching colors, just stick it in the slot and hit the buttons.
Super easy to use By Michael on 3/15/2019Michael would recommend this product to a friendMy Hanna Alkalinity checker gives me a reading of 180. I cannot imagine it's this high. I checked with my API Reef Master kit and it's reading 9dKH. I would give the nod to the Hanna Checker as the numbers are pretty close.
Awesome By Dr P. on 3/8/2019Dr P. would recommend this product to a friendThis product makes testing easy and simple. This is Best test kit for alkalinity that is out in the market today.
Wow, why didn't I get this years ago? By Mikel on 11/28/2018Mikel would recommend this product to a friendI honestly don't know why I didn't just buy one of these years ago. I test alk so much more frequently now and get much more consistent results. Quick, easy to use, added to my must have tools for reefing
Test Water By Wayne on 11/6/2018Wayne would recommend this product to a friendI love every Hanna checker I have. So easy and fast to deal with. I wish it was a little easier and cheaper to get the reagent but its not enough to not use them for sure. I am going to change all my test out with Hanna that they have available and that I can use Hanna with. I even have a Hanna PH checker as well.
First Hanna Checker By Collin on 10/16/2018Collin would recommend this product to a friendLove this Alk checker from Hanna, looked at them for far too long and finally made the order. I feel confident between the Hanna checker and my API test now.. The procedure is super simple, and as with any other test follow the instructions exactly for most accurate results.
Works nicely By Seth on 9/29/2018Seth would recommend this product to a friendEasy, consistant results
Quick. Easy. Accurate. By Robert on 9/24/2018Robert would recommend this product to a friendSuper easy to use with reliable results that don’t make you guess if the color endpoint has been reached. Excellent!
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!