GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) HPS The idea is similar to

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

This dual female

Poly-tainer™ cans are available in #1 to #6 sizes and a variety of shapes including square

weighted strainer

GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) HPS The idea is similar 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!