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pH problems

Posted by catlady4444 7A (My Page) on
Sat, May 10, 08 at 15:30

After seemingly ineffectively ammending the soil of my blueberries & rhodies (acidifying), and hydrangeas (alkalininzing), I finally tested my rapitest probe pH meter by probing some tomato sauce: pH 7. So I tried vinegar: ph 7. OK, so it doesn't work---maybe it never did. I see from other posts that the probe needs periodic cleaning---but how? without damaging it, of course. Fixing this problem would certainly be cost effective!

I read many assorted posts on pH meters, but they are all very pricey. Can anyone recommend an accurate one under $50? Or am I asking too much?



Follow-Up Postings:

RE: pH problems

Tomatoes are acidic, so your probe may not be off at all. I'm sure someone else may be along shortly with a much better explanation, but in testing tomatoes and vinegar you may be comparing apples and apples...

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