GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) 67016 IP67 Waterproof: Fully submersible

IP67 Waterproof: Fully submersible

Note: Meters sold separately

and press READ

Accuracy @ 25°C / 77°F

GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) 67016 IP67 Waterproof: Fully submersibleHI70004G is a high quality pH 4. 01 calibration buffer designed with hydroponics, aquaponics, and greenhouses in mind. Single use sachets are highly portable, with a small footprint and a lightweight design. They are the perfect accessory for your on the go testing, fitting easily into your pocket or carrying case. Supplied with Certificate of Analysis Single use sachets for convenience. Perfect for use with GroLine testers and portable meters!