Aquamaster pH 4.01 Calibration Solution - 100mL air filter Place the test strip on

Place the test strip on a non-absorbent flat surface for 5 minutes

10g for a 10L tank)

A billion little microbial minions that live only to clean your root system

and most effectively

Cable Length: (M): 5

Aquamaster pH 4.01 Calibration Solution - 100mL air filter Place the test strip onAqua Master Tools pH 4. 01 Calibration Solution NIST Traceable The Aqua Master Tools pH 4. 01 Calibration Solution is a high accuracy buffer solution designed for calibrating pH meters and testers, ensuring reliable and precise readings every time. This solution is traceable to NIST standards, making it ideal for professional, laboratory, hydroponic, and horticultural applications. Specially formulated to work seamlessly with Aqua Master Tools pH