- Fill a clean beaker or jar with 30mL of deionised/Distilled water.
- Add one buffer tablet of the required value and shake the beaker/jar until the tablet disintegrates.
- Stand the beaker/jar for approximately two minutes to ensure that the tablet is completely dissolved and to allow any insoluble particles to settle.
- Check that the solution colour corresponds to the buffer value required.
PH Buffer Tablets
Buffer solutions are produced with buffer tablets that are colour-coded for easy identification. The colour-coding is as shown below.
- Buffer PH 4 – Red
- Buffer PH 7 – Yellow
- Buffer PH 10 – Green
Fresh buffer solution should always be made up in deionized water. the maximum tolerance based on the PH values 4, 7 and 10 is +/- 0.05 PH.