GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) 810666009176 Free & Total Chlorine (DPD

Free & Total Chlorine (DPD Method): DPD reagent reacts with chlorine to produce a pink-colored solution

the galvanic probe is ready to measure immediately

Low power demand for extended battery life (batteries included)

Ethylene glycol is used in glycol cooling systems for industrial applications

GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) 810666009176 Free & Total Chlorine (DPDHI70004G 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!