Wait for Stability: Allow the reading to stabilize (typically 30-60 seconds)

Remove the old filter cartridge

Fast NTC sensor response

fruit processing (ripeness testing)

Superior Protection: Removes 99

GroLine pH 4.01 Buffer Sachets, 20 mL (25 pcs.) WU-S3800MB-TL Wait for Stability: Allow theHI70004G 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!