Bluelab pH Pen tent accessory You can use it for

You can use it for wet or dry trims thanks to the wide variety of blades

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Bluelab pH Pen tent accessory You can use it forBluelab pH Pen This user friendly and hardy handheld pen will take measurements in increments of 0. 1 pH and is fully temperature compensated, so you can expect accurate readings every time. Bluelabs products are designed and built for grower environments not the lab so you can relax knowing that your pen can withstand the knocks, drops and deep water plunges that come with everyday growing. The fully waterproof Bluelab pH Pen is designed to float