Buffer solution: 1 M aqueous solution of tris-hydroxymethylaminomethane bring to pH 8 by addition of hydrochloric acid (5.12) (check by potentiometer).
Bufferoplossing: 1 M oplossing in water van trishydroxymethylaminomethaan wordt op pH 8 gebracht door toevoeging van zoutzuur (5.12) (potentiometrisch te controleren).