1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

9. BS 6068-2.44:1993 ISO 9964-3:1993 Water quality - Part 2: Physical, chemical and biochemical methods - Section 2.44 Determination of sodium and potassium determination of sodium and potassium by flame emission spectrometry

10. BS 6068-2.47:1995 ISO 11083:1994. Spectrometric methodWater quality - Part 2: Physical, chemical and biochemical methods - Section 2.47 Determination of chromium (VI) - using 1,5 diphenylcarbazide