Apec Standard pH Probe

theMerchant

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#3
Yes calibrated with pH 7 and 10 solutions. You can use it tank as is but in reef tanks, we are measuring 8.1 to 8.4 pH so very small window. So if it's off you will be way out.

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Dgelz

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#8
How long will ph and temp probes last before needing to be replaced?


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