GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) HPS has no on/off buttons to

has no on/off buttons to worry about and does not need calibrating

The instrument is supplied with a light sensor connected by a fixed 1

weighted strainer

This product is a replacement part for the old style HF COSYS

The idea is similar to a Prune Pot (fabric pot)

GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) HPS has no on/off buttons toHI70004G 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!