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#2930314 - 03/06/13 12:03 PM possible measure age via ph?
cathy Offline


Registered: 05/17/11
Posts: 149
Loc: usa
New zerex (g05,asian) coolants have ph of 8. If it changes up or down, could that show when2 change?
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#2930414 - 03/06/13 01:46 PM Re: possible measure age via ph? [Re: cathy]
Gabe Offline


Registered: 02/22/11
Posts: 1431
Loc: Indiana
No. The pH doesn't degrade or break down over time.

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#2930474 - 03/06/13 02:37 PM Re: possible measure age via ph? [Re: Gabe]
Chris142 Offline


Registered: 06/05/03
Posts: 12326
Loc: apple valley, ca
Originally Posted By: Gabe
No. The pH doesn't degrade or break down over time.
yes it does. That's why we use ph test strips to determine coolant conditions.
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#2930510 - 03/06/13 03:01 PM Re: possible measure age via ph? [Re: cathy]
JHZR2 Offline



Registered: 12/14/02
Posts: 35426
Loc: New Jersey
pH is just a logarithmic valuation of protons in a material. The concentration of the H+ will indeed change as the chemistry changes or degrades for both the coolant additives and the metals in the system.

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#2930606 - 03/06/13 04:16 PM Re: possible measure age via ph? [Re: cathy]
gathermewool Offline


Registered: 01/09/09
Posts: 3836
Loc: New England
8 sounds too low for corrosion inhibition. A higher pH is better, to a point. Too high of a pH can be caustic.


Edited by gathermewool (03/06/13 04:17 PM)
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