1. BS 6068-2.24:1986 ISO 7875-2:1984. Water quality - Part 2: Physical, chemical and biochemical methods - Section 2.24 Method for the determination of non-ionic surfactants using Dragendorff reagent

2. BS 6068-2.29:1987 ISO 8288:1986. Water quality - Part 2: Physical, chemical and biochemical methods - Section 2.29 Determination of cobalt, nickel, copper, zinc, cadmium and lead flame atomic absorption spectrometric methods

3. BS 6068-2.31:1987 ISO 6333:1986. Water quality - Part 2: Physical, chemical and biochemical methods - Section 2.31 Method for determination of manganese formaldoxime spectrometric method.pdf

4. BS 6068-2.34:1988. Water quality - Part 2: Physical, chemical and biochemical methods - Section 2.34 Method for the determination of the chemical oxygen demand.pdf

5. BS 6068-2.36:1989 ISO 7890-3:1988. Water quality - Part 2: Physical, chemical and biochemical methods - the determination of nitrate using sulphosalicylic acid.pdf

6. BS 6068-2.37:1990 ISO 9297:1989. Water quality - Part 2: Physical, chemical and biochemical methods - Section 2.37 Method for the determination of chloride via a silver nitrate titration with chromate indicator

7. BS 6068-2.40:1991 ISO 9390:1990. Water quality - Part 2: Physical, chemical and biochemical methods - Section 2.40 Method for the determination of borate by spectrometry using azomethine-H

8. BS 6068-2.41:1993 ISO 10359-1:1992. Water quality - Part 2: Physical, chemical and biochemical methods - Section 2.41 Determination of fluoride electrochemical probe method for potable and lightly polluted water

9. BS 6068-2.42:1993 ISO 9964-1:1993. Water quality - Part 2: Physical, chemical and biochemical methods - Section 2.42 Determination of sodium and potassium determination of sodium by atomic absorption spectrometry

10. BS 6068-2.43:1993 ISO 9964-2:1993. Water quality - Part 2: Physical, chemical and biochemical methods - Section 2.43 Determination of sodium and potassium determination of potassium by atomic absorption spectrometry