Bluelab pH Pen – Waterproof Handheld pH & Temperature Meter | Double-Junction Probe | Made in NZ ASP-20 300 hours of continuous use

300 hours of continuous use (battery included)

The HI98309 comes already calibrated

making titrations fast

and soil-based organic gardening

Bluelab pH Pen – Waterproof Handheld pH & Temperature Meter | Double-Junction Probe | Made in NZ ASP-20 300 hours of continuous useBluelab pH Pen Waterproof Handheld pH & Temperature Meter The go to pH pen for growers worldwide. The Bluelab pH Pen (SKU: PENPH) is a compact, hardy, and easy to use handheld meter that delivers accurate pH and temperature readings in any nutrient solution. With a double junction pH probe, 0. 1 pH resolution, simple 2 point calibration, and a fully waterproof design that floats its the essential measurement tool for every growing setup, from home