Take a 100.0mL aliquot of the boiled beverage in a 250mL beaker.
2. Place the beaker on the magnetic stirrer, add the stirrer “bug” (more correctly a magnetic
follower) and carefully clamp the burette into position above the beaker (so that you can
comfortably add base) and the pH electrode into position. Turn the stirrer on and make sure that
it does not come into contact with the pH electrode. Stirring should be a steady, constant rate
– not too rapid. This will help achieve effective mixing with each addition of the base.