Hanna Alkalinity Checker

[BlueWorldJeff]

Would the reagent for the dKH checker (HI772S) cause an inaccurate reading if used in the ppm checker (HI775)?

I got the 772s reagent by accident for my ppm checker and it shows 7.9 where salifert reads 8.4 and salifert reads the 6.7 calibration solution correctly.

 

[Daniel@R2R Verified Admin]

Not sure, but maybe @Randy Holmes-Farley can help

 

[Randy Holmes-Farley Verified Community Expert]

I would expect it is the same device (and same reagents) with different units of readout, but I am not certain and I'd ask Hanna.

 

[SashimiTurtle]

I'm pretty sure they are separate reagents. The number for the dKH reagent is HI772S and the ppm reagent number is HI775S...

@Hanna Instruments can answer any questions for certain.

 

[Randy Holmes-Farley Verified Community Expert]

https://www.reef2reef.com/threads/new-reagent-code-for-the-hi772-dkh-alkalinity-checker.311205/

Hi all,

We updated the reagent product code used for the HI772 dKH Alkalinity Checker. The new code is:

HI772-26 Marine Alkalinity Checker® HC Reagents for HI772 (25 Tests)
http://hannainst.com/marine-alkalinity-checkerr-hc-reagents-25-tests.html

This have been updated from the HI755-26. The chemical used is still the same we just created a new code to match our reagent categorization system. The HI755-26 Alkalinity reagent for the ppm Marine Checker is still an active code and the reagents can be used interchangeably.

Thank you for testing with Hanna Instruments!

 

[Chac317]

I called bulkreefsupply about this a couple weeks back as I had done the same thing. I have the ppm unit and purchased the dkh solution. They told me it was all the same fwiw.

 

[Chac317]

Aaaaand there you go lol

 

[BlueWorldJeff]

Thank you for the info. Now I have to figure out why it's reading low!

 

[BlueWorldJeff]

I use the provided tip that came with the reagent and wipe off the cuvettes before I put them in the checker. The salifert test matches the calibration fluid included in the test kit and it shows .5 dkh higher than Hanna ppm alk checker

 

[Gablami]

You can by a Hanna calibration set of vials for $20 to make sure your Hanna device is working properly.