Give it a try By Robert on 11/18/10

Robert would recommend this product to a friend

This makes quick work of getting your PH value. I have found however that I have had to re-calibrate it more than once which brings my concern of how accurate it really is.
Easy and accurate By Stephen Dunn on 4/15/10

Stephen Dunn would recommend this product to a friend

I bough this pen pH meter to be able to test my nano tanks. As soon as I opened the package I was impressed. Super easy to calibrate and use. One of the best items I have bought from Bulk Reef Supply.

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