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Bluelab pH Pen - The Ultimate Handy Solution for Measuring pH and Temperature - PENPH

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Automatic Temperature Compensation

Measures pH and Temperature

Fully waterproof

Successful pH calibration indicator

Backlit LCD display

Bluelab pH Pen - The Ultimate Handy Solution for Measuring pH and Temperature - PENPH,

9 out of 10 based on 32 ratings

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4 stars "Blue Lab pH Pen" I'm happy with this pH pen I've used others and this one is a quality product The only thing that i didn't like was that you can't use it Amazon com : Blue Lab Commercial Truncheon PPM / EC / CF Meter : Ppm Pen : Patio Lawn & Garden