pH Buffer 7 250ml

pH buffers are a known solution of a certain pH value designed to test the accuracy of pH meters used to measure the pH of a nutrient solution.

It is important to realise that unless you calibrate your pH meters with Buffer 4 and/or 7 at regular intervals the accuracy of the pH readings will be doubtful. Serious loss of crop performance may result, which if allowed to continue can also result in damage to the plants.

When calibrating, it is a good idea to only use a small sample of buffer solution in a separate container, test the meter and then discard the solution. Discarding the used solution will prevent any contamination of the fresh solution and maintain longer life of the calibrating solution.