Home made calibration fluid for Pinpoint PH probe?

10" Red Devil · 07/16/2006, 11:47 AM

Hi,

I have a pinpoint ph probe and I only have the 7.0 calibration fluid. Was wondering if I could diy the other fluids needed to calibrate this thing?

Thanks.

10" Red Devil · 07/16/2006, 01:00 PM

bump

Randy Holmes-Farley · 07/16/2006, 01:00 PM

Not really. You can make a pH 9.2 borax fluid to check the meter (first link below), but I'd use real packets to calibrate it.

http://web.archive.org/web/200011021...io/default.asp

Measuring pH with a Meter
http://www.advancedaquarist.com/issues/feb2004/chem.htm

A Comparison of pH Calibration Buffers
http://reefkeeping.com/issues/2005-02/rhf/index.htm

these articles may also be helpful:

masterqaz · 07/16/2006, 05:23 PM

couldent you use bleach to check it as well (ph 11)

10" Red Devil · 07/16/2006, 07:00 PM

Okay well then can anyone tell me where the best place to get the calibration fluids is?

Thanks!

Randy Holmes-Farley · 07/17/2006, 12:15 PM

I wouldn't use bleach to calibrate a pH meter. It is not necessarily a controlled pH solution.

Okay well then can anyone tell me where the best place to get the calibration fluids is?

Any RC dry goods sponsor.

07/16/2006, 11:47 AM	#1
10" Red Devil Registered Member Join Date: Jun 2005 Location: Michigan Posts: 1,611	Home made calibration fluid for Pinpoint PH probe? Hi, I have a pinpoint ph probe and I only have the 7.0 calibration fluid. Was wondering if I could diy the other fluids needed to calibrate this thing? Thanks.

07/16/2006, 01:00 PM	#3
Randy Holmes-Farley Reef Chemist Join Date: Apr 2001 Location: Arlington, Massachusetts Posts: 86,233	Not really. You can make a pH 9.2 borax fluid to check the meter (first link below), but I'd use real packets to calibrate it. http://web.archive.org/web/200011021...io/default.asp Measuring pH with a Meter http://www.advancedaquarist.com/issues/feb2004/chem.htm A Comparison of pH Calibration Buffers http://reefkeeping.com/issues/2005-02/rhf/index.htm these articles may also be helpful: __________________ Randy Holmes-Farley Current Tank Info: 120 mixed reef

07/17/2006, 12:15 PM	#6
Randy Holmes-Farley Reef Chemist Join Date: Apr 2001 Location: Arlington, Massachusetts Posts: 86,233	I wouldn't use bleach to calibrate a pH meter. It is not necessarily a controlled pH solution. Okay well then can anyone tell me where the best place to get the calibration fluids is? Any RC dry goods sponsor. __________________ Randy Holmes-Farley Current Tank Info: 120 mixed reef

07/16/2006, 05:23 PM	#4
masterqaz Registered Member Join Date: Oct 2005 Location: Oakville Ont. Canada Posts: 551	couldent you use bleach to check it as well (ph 11)

07/16/2006, 07:00 PM	#5
10" Red Devil Registered Member Join Date: Jun 2005 Location: Michigan Posts: 1,611	Okay well then can anyone tell me where the best place to get the calibration fluids is? Thanks!