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Joined: Wed Jun 06, 2012 5:41 pm Posts: 1203
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I still see people that don't know this yet. You cannot trust the 5ml line on the API test vials. They are screen printed on in mass. You must use a syringe. If you are not measuring your water with a syringe into the vials, you are not getting correct results.
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_________________ -Dave
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