Hanna Hi70007G GroLine pH 7.01 Buffer Sachets, 20 mL (25 pcs.) tool-measuring The product description states that

The product description states that the rubber clamp is designed to connect duct ports securely

using the adjustable intake and exhaust vents to customize directional airflow and maximize efficiency

and SCHEDULE modes

Improves availability of much-needed iron and phosphorus

Say goodbye to uneven lighting and hello to a smoother experience

Hanna Hi70007G GroLine pH 7.01 Buffer Sachets, 20 mL (25 pcs.) tool-measuring The product description states thatHI70007G is a high quality pH 7. 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!