pH7 buffer (calibration solution) 250ml Dutch Nutrients
What is a pH buffer 7?
A solution with a set pH value of 7.00 – to be used for calibration of pH meters, monitors and controllers.
PH buffers are usually made up of a combination of a conjugate base and a weak acid that absorbs excess hydrogen atoms to retain a stable pH value in solution. As such, they work well for calibrating electrochemical potentiometers for pH measurements with a low uncertainty to enhance traceability