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High PH out of RO/DI |
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High PH out of RO/DI |
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03-15-2002, 02:21 PM
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#1 |
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Tenant
Join Date: Jan 2002
Location: Los Angeles
Posts: 69
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High PH out of RO/DI
I have a number of questions I'm hoping someone can help me with:
1. Is it normal to get high PH out of RO/DI unit? I measured and recalibrated (Hanna) and did a manual test and all showed a PH of 9.2 straight out of the unit. This has lead to an extremly high 8.8 in my tank. 2. Not having a great understanding of PH (even tho I've read a number of things on it), what would the best way be to lower it? 3. Also, I always thought that PH was a measure of acidity vs. alkalinity, but I notice everyone measures for Alk and PH seperately...why, if its opposite ends of the same thing? Maybe there's a good book on this that someone can point me to....for instance "reef chemistry for dummies" or something..  Thanks Kev |
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03-15-2002, 04:01 PM
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#2 |
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Tenant
Join Date: Jan 2002
Location: Los Angeles
Posts: 69
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anyone?
Maybe I should post the question a different way.....pH is one of the least important readings to take. If alkalinity is correct, then pH will also be correct, making the testing of pH unneccessary. True?
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03-16-2002, 12:51 PM
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#3 |
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Tenant
Join Date: Jan 2002
Location: Los Angeles
Posts: 69
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c'mon fellas....
What nobody?....I guess its a stupid newbie question.....
"pH of pure water (from a RO/DI unit) is hard to accurately measure with a pH meter, and the pH that you record may be.... spurious ......... The measured pH of my RO/DI water is higher than that (about 10), but it is quite clean based on it's measured conductivity." - Randy Homes-Farley. |
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