OpenLegislation

Division 4.7.1

United Kingdom

Original text. Later amendments are not shown.

Stock solution, 0,250 mg F-/ml. Weigh accurately 138,1 mg of sodium fluoride (4.1) and dissolve in water (4.2). Quantitatively transfer the solution into a 250 ml volumetric flask (5.5). Dilute to the mark with water (4.2) and mix.