Grow Technology Calibration Buffer PH 4 Solution 300ml Control Hydroponics
Calibration Buffer PH 4 Solution 300ml Grow Technology Control Hydroponics
Solutions of a known and fixed pH.
These are used to calibrate pH meters. This should be done on a regular basis to ensure ongoing accuracy from the meter.
This is a 300ml bottle of PH4 solution.
Available buffer solutions: pH 4 and pH 7