1. BS 1747-11:1993 ISO 9835:1993. Methods for Measurement of air pollution - Part 11: Determination of a black smoke index in ambient air

2. BS 1747-12:1993 ISO 10313:1993. Methods for Measurement of air pollution - Part 12: Determination of the mass concentration of ozone in ambient air chemiluminescence method

3. BS 1747-13:1994 ISO 9855:1993. Methods for Measurement of air pollution - Part 13: Determination of the particulate lead content of aerosols collected on filters atomic absorption spectrometric method

4. BS 1747-6:1983 ISO 4219:1979. Methods for Measurement of air pollution - Part 6: Sampling equipment used for the determination of gaseous sulphur compounds in ambient air

5. BS 1747-9:1987 ISO 7996:1985. Methods for Measurement of air pollution - Part 9: Determination of the mass concentration of nitrogen oxides in ambient air chemiluminescence method

6. BS 1748-8:1960. Method for The determination of phosphorus in copper alloys (photometric method)

7. BS 1821:1982. Specification for Class I oxy-acetylene welding of ferritic pipework for carrying fluids

8. BS 1834:1968. Specification for isoPropyl acetate

9. BS 1868:1975 + A1:1990. Specification for Steel check valves (flanged and butt-welding ends) for the petroleum, petrochemical and allied industries

10. BS 1872:1984. Specification for Electroplated coatings of tin