Anyone have instructions for Hannah Ph meter?

[TurboALLWD]

So i took my newly purchased, used digital ph/ppm meter up to the local hydro shop so i could get it calibrated. Well the guy didn't know shit about hannah meters and after messing with it for a bit, he gave up. I did buy 7.0, 4.0 and ppm calibration solution.

My question is: Why does it say while calibrating ph, "use 6.86"? it use to say use 7.01. then it goes to use 4.01. So I do all of that, using 7.0 where it says 6.86. Still reads funny. maybe i need a new electrode? Any info on the meter would be great! thanks

TurboALLWD Reviewed by TurboALLWD on 11-20-2008. Anyone have instructions for Hannah Ph meter? So i took my newly purchased, used digital ph/ppm meter up to the local hydro shop so i could get it calibrated. Well the guy didn't know shit about hannah meters and after messing with it for a bit, he gave up. I did buy 7.0, 4.0 and ppm calibration solution. My question is: Why does it say while calibrating ph, "use 6.86"? it use to say use 7.01. then it goes to use 4.01. So I do all of that, using 7.0 where it says 6.86. Still reads funny. maybe i need a new electrode? Any info on the Rating: 5

[stinkyattic]

Here's the calibration instructions:
Unwrap meter from packaging.
Sort plastic from paper inserts.
Recycle according to your town's recycling program. The meter can just go in the trash.

Sorry... I couldn't resist. Hanna makes crappy products.

Okay. The reason there are 2 values, 6.86 and 7.01, is that the NIST buffer 'neutral' is actually 6.86. (.025 molar disodium phosphate at 25'C is pH 6.86). You have to hit the 'mode' button during the calibration to tell the meter you are using the NIST buffer set (4.01-6.86-9.18) instead of the more common 4.01-7.01-10.01 buffers.

So read the packaging on your calibration standards to see which calibration mode you will need to run.

[TurboALLWD]

Stinky, can you put that in laymans terms please? lol I know my meter is junk, thats why it won't go to 7.01 when i hit mode, it just turns off. I think its going to go in the trash and i'll keep playing with my ph sticks. damnit

[stinkyattic]

Huh!? It's not supposed to do that!
So what I hear you saying is that you have a meter that is permanently stuck with the NIST standard curve settings and you can't change away from the 6.86 one? Can you get the NIST standards instead? Or does your calibration buffer/standard have '7.01' on the package?
Hrm. I'm going to go find the manual and link to it. Hopefully this is a simple issue where you have to hit something else before 'mode', like actually be in the calibration/standardization window and it will work.
Can you send the thing back?

Okay here is the link:
http://www.pmtac.org/download/HANNA/98129_98130.pdf

[TurboALLWD]

THANK YOU! for the instructions. It is definitely stuck, and it is definitely used, bought at half price from a big timer such as yourself. He has 3 of em and told me one didn't calibrate correctly so if i got that one, bring it back, and he'll exchange it. too bad i lost his freakin number. lol

[stinkyattic]

...it is definitely used, bought at half price from a big timer such as yourself...too bad i lost his freakin number. lol

Lol! I'm not sure if I qualify as a big timer, but big timers such as myself... we tend to lose our own numbers pretty frequently... betcha that if he's big, and you manage to find that number, by the time you find it it will give you this message:
"We're sorry, but the TracFone number you are trying to reach is no longer in service"...

Good luck with this, and future, crappy meters! :jointsmile:

[LOC NAR on probation]

Have you tried new batteries ????

I have a hanna and I have the book, I think. Yes they are crappy and hard to manage. I think I changed batt's and mine worked again. The last time I had to change electrode cause it wouldn't cali, man you can almost buy another for that..

Next meter will be worth the money.

[socialistpete]

I use a Hanna Also, thought because i see them around alot they were good meters, found out the hard way thats not the caase. What do you reccomend that won't break the bank?

[stinkyattic]

A Milwaukee, if you can find one.

[Biggins]

I bought a Controlwizard ppm/ph/temp meter not long ago. Its really been a pain in the ass. readings of 100°, 44ph, and 1000 ppm on cold RO water. Looks like I'm out $150