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BS 2655-4:1969 Specification for lifts, escalators, passenger conveyors and paternosters General requirements escalators
BS 2655-6:1970 Specification for lifts, escalators, passenger conveyors and paternosters Building construction requirements
BS 2655-7:1970 Specification for lifts, escalators, passenger conveyors and paternosters Testing inspection
BS 2655-8:1971 Specification for lifts, escalators, passenger conveyors and paternosters Modernization or reconstruction of escalators
BS 2657:1974 Specification for fluoroboric acid and metal fluoroborates for electroplating
BS 2690-102:1979 Methods of testing water used in industry Hydrazine: spectrophotometric method (4-dimethylaminobenzaldehyde)
BS 2690-104:1983 Methods of testing water used in industry Silica: reactive, total and suspended
BS 2690-115:1983 Methods of testing water used in industry Cyclohexylamine: spectrophotometric method
BS 2690-116:1983 Methods of testing water used in industry Morpholine: spectrophotometric method
BS 2690-117:1983 Methods of testing water used in industry Long-chain fatty amines: spectrophotometric method
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