Senz PH Pen

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Senz pH tester is a user friendly & simple to use pH meter.
A water resistant case and features an easy to read, 8mm LCD display
indicating pH over the range of 0 to 14pH with a resolution of 0.1pH and
an accuracy of ?0.2pH. The ambient operating temperature range of the
Senz pH meter is 0 to +50?C.