Best PH meter

[reverendmaynard]

Hey folks,

I'm getting tired of the guess work involved in trying to read my chemical PH test, so I'm thinking of going with an electronic meter. I'd like to hear people's stories of what they use, what the testing/calibrating procedures are, and whether they'd get the same model again to help me make my choice. If you know the approximate price of the unit, that would help too.

TIA,
Maynard.

 

[javajaws]

A good many people including myself use the Pinpoint meter. Simple 2-point calibration, runs on battery or optional AC adapter. No problems with it so far...in fact I just bought a Pinpoint pH controller as well for my Ca reactor.

 

[reverendmaynard]

<a href=showthread.php?s=&postid=6557299#post6557299 target=_blank>Originally posted</a> by javajaws
A good many people including myself use the Pinpoint meter. Simple 2-point calibration, runs on battery or optional AC adapter. No problems with it so far...in fact I just bought a Pinpoint pH controller as well for my Ca reactor.

Thanks.

I'm a newbie, so if you could go into a little more detail on the calibration (what do you do and how often) and the procedure for testing, that would be great.

 

[reverendmaynard]

Actually, I just looked it up at drs foster and smith. They have the directions on the site, so I think I understand..,

It's a constant monitor, so you get real time readings all the time. Calibrate once a month by placing probe in reference solution and cheking that reading is correct for ph of reference solution. Adjust appropriately if it doesn't match.

Correct?

Do you just use the ph 10 solution, or do you need the 7 and 4 too?

 

[javajaws]

You need the 7 and either 10 or 4. 7 and 10 seems to be what most people use because it brackets the normal SW pH values. It comes with a one time use packet of 7 and 10 for initial calibration. You'll need to buy additional ones (or better yet bottles of 7 and 10).