PH Readings For RO/DI?

Trolldoll · 12/22/2009, 07:48 PM

How high should the PH be on freshly filtered water? I just tested mine and it was 9.02. Will temp make a probe give false readings?

buy_baff · 12/22/2009, 07:54 PM

I would think it is dependant on the ph to start with mine is 7.2 before and 7.0 after.

Myteemouse · 12/22/2009, 08:03 PM

mine is also low at around 7.0-7.2

bertoni · 12/22/2009, 08:28 PM

The pH of RO/DI water can't be measured accurately by our test equipment, and it's not relevant, in any case. Since it has no buffer, the pH can change very rapidly.

12/22/2009, 07:48 PM	#1
Trolldoll Registered Member Join Date: Oct 2008 Location: Hampton, VA. Posts: 124	PH Readings For RO/DI? How high should the PH be on freshly filtered water? I just tested mine and it was 9.02. Will temp make a probe give false readings?

12/22/2009, 08:03 PM	#3
Myteemouse Registered Member Join Date: Jan 2009 Posts: 53	mine is also low at around 7.0-7.2 __________________ POWER PIG HELLO, I'M BURNING Gotta get it right sometime 125 penninsula 9 months old SPS LPS ZOO's lots of fish.

12/22/2009, 08:28 PM	#4
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	The pH of RO/DI water can't be measured accurately by our test equipment, and it's not relevant, in any case. Since it has no buffer, the pH can change very rapidly. __________________ Jonathan Bertoni

12/22/2009, 07:54 PM	#2
buy_baff Registered Member Join Date: Feb 2009 Posts: 1,180	I would think it is dependant on the ph to start with mine is 7.2 before and 7.0 after.