| BS 4130:1984 | Specification for sodium hydroxide (technical grades) |
| BS 4651-0:1987 | Ammonia solution. Methods for sampling |
| BS 4651-1:1988 | Ammonia solution. Method for determination of density at 20°C |
| BS 4651-2:1987* ISO 7108-1985 | Ammonia solution. Method for determination of ammonia content |
| BS 4651-3:1987* ISO 7109-1985 | Ammonia solution. Method for determination of residue on evaporation |
| BS 4651-4:1988 | Ammonia solution. Method for determination of residue after heating at 850°C |
| BS 4651-5:1988 | Ammonia solution. Method for determination of iron content |
| BS 4651-6:1988 | Ammonia solution. Methods for determination of chloride content |
| BS 4651-7:1988 | Ammonia solution. Method for determination of carbon dioxide content |
| BS 5634:1978 | Methods of test for potassium hydroxide |
| BS 6075-0:1981 | Methods of sampling and test for sodium hydroxide for industrial use. General introduction |
| BS 6075-10:1981* ISO 5992-1979 | Methods of sampling and test for sodium hydroxide for industrial use. Determination of mercury content (photometric method) |
| BS 6075-11:1981* ISO 5993-1979 | Methods of sampling and test for sodium hydroxide for industrial use. Determination of mercury content (flameless atomic absorption method) |
| BS 6075-12:1981 | Methods of sampling and test for sodium hydroxide for industrial use. Determination of copper content |
| BS 6075-14:1981 | Methods of sampling and test for sodium hydroxide for industrial use. Determination of matter insoluble in water |
| BS 6075-1:1981* ISO 979-1974 | Methods of sampling and test for sodium hydroxide for industrial use. Determination of sodium hydroxide content |
| BS 6075-2:1981* ISO 981-1973 | Methods of sampling and test for sodium hydroxide for industrial use. Determination of chloride content (mercurimetric method) |
| BS 6075-3:1981* ISO 983-1974 | Methods of sampling and test for sodium hydroxide for industrial use. Determination of iron content |
| BS 6075-4:1981* ISO 984-1974 | Methods of sampling and test for sodium hydroxide for industrial use. Determination of silica content |
| BS 6075-5:1981* ISO 3195-1975 | Methods of sampling and test for sodium hydroxide for industrial use. Sampling and preparation of main test solution |
| BS 6075-6:1981* ISO 3196-1975 | Methods of sampling and test for sodium hydroxide for industrial use. Determination of carbonate content |
| BS 6075-7:1981* ISO 3197-1975 | Methods of sampling and test for sodium hydroxide for industrial use. Determination of chloride content (photometric method) |
| BS 6075-8:1981* ISO 3198-1975 | Methods of sampling and test for sodium hydroxide for industrial use. Determination of sulphate content |
| BS 6075-9:1981* ISO 3697-1976 | Methods of sampling and test for sodium hydroxide for industrial use. Determination of calcium and magnesium contents |