Hanna Checker Calibration

[@wisamism3373]

ihave one same as in the video but the reading is not stable the digits keep changing too much.. what is the problem..

[@Sudipto17Kolkata]

Indeed nice and easy. But do you have any video for the new HI98100 which does not have any calibration screws? It is probably easier. And how do you actually do the test on a sample of tank water? I know I sound like a dodo but I need some help. Probably I will check with my friend who is a chemistry professor.

[@wegrow4859]

Unfortunately, we do not have a video on the new HI98100 pen. However, by visiting the manufacturer's website, they provide an instructional video on how to calibrate this unit. Calibration with this unit is done with both a 7.01 and 4.01 buffering solutions or with a 1 point calibration that is done with only a 7.01 solution. Calibration cannot be performed in sample water but only with the aforementioned solution(s).

[@Sudipto17Kolkata]

+We Grow - thanks a lot. That silent video from Hanna is pretty useless, compared to this :-) It will make sense to someone who knows how to do it. Not for rank novices who have never used anything similar. I worked it out ultimately with the help of the sales guy from Hanna and your video gave some confidence. I was a little surprised that one does not need to rinse the probe between dipping in the two solutions. Is it special about this new machine? When I tried to rinse it after the first dip in pH 7 it showed an error message. Anyway, thanks for your video.

[@NONVIOLENTEXTREMIST]

the hanna site tells you not to wipe the glass probe

[@Bennuides]

so is the calibration stuff a liquid or a powder?

[@wegrow4859]

It is liquid.