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BS L 173:1991 Specification for castings of aluminium-silicon-magnesium alloy, chill cast (solution treated and precipitation treated to an overaged (T7) condition)
BS 6840-17:1991 Sound system equipment - Methods for specifying and measuring the characteristics of standard volume indicators
BS L 174:1991 Specification for castings of aluminium-silicon-magnesium alloy, sand cast (solution treated and precipitation treated to an overaged (T7) condition)
BS 6101-2:1991 Machine tool ball screws - Specification for accuracy, including geometrical tests
BS AU 238:1991 (R2005) Glossary of terms for road vehicle lighting and light signalling devices partTitleEN sectionTitleEN
BS 2838-2:1991 Examination and general treatment couches - Specification for variable height couches
BS 3908-9:1991 Methods for the sampling and analysis of lead and lead alloys - Sulphur in lead and lead alloys
BS 7417:1991 Specification for interface dimensions of flat face 'O'-ring seal hydraulic couplings
BS 7411:1991 Specification for lever operated knapsack sprayers
BS 7416:1991 Specification for precision finished seamless cold-drawn low carbon steel tubes for use in hydraulic fluid power systems
BS 2782-1:Method 130A:1991 Methods of testing plastics. Thermal properties - Determination of the thermal stability of polyvinyl chloride by the Congo red method
BS 4285-4:1991 (R2016) Microbiological examination for dairy purposes partTitleEN sectionTitleEN