PH 4.0 Calibration Fluid
Brought to you by Happy Harvest
A 4.0 buffer solution used to calibrate pH meters.
Pour a small amount of calibration fluid into a clean and dry container just big enough for the pH pen’s probe side to fit into, an empty bottle cap or small cup works well. Don’t use any metals.
then simply calibrate your PP pen using manufacturers instructions.
Available in: 250ml
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