How to make pH buffers from scratch, DIY, no scale required!

In this video I walk you through the process of creating a pH 4 buffer that can be used for pH calibration if you already have a calibrated pH meter. The same process can be done for a pH 7 buffer, although in this case you should add the potassium citrate first, then add citric acid slowly. This process allows you to buy calibration solutions only once, then create large quantities so that you can calibrate more frequently at a much lower cost.

(Please notice that the Amazon links below are affiliate referral links. This means that if you click on them I may receive a commission from purchases. There is no additional cost to you, but it helps me to keep posting content for free.)

Beaker set
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Citric Acid Monohydrate
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Potassium Citrate
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High precision NIST pH buffers for calibration
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Apera pH60 meter
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Food dyes
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Sodium Benzoate
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