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BS 5241-2:1991 Rigid polyurethane (PUR) and polyisocyanurate (PIR) foam when dispensed or sprayed on a construction site - Specification for dispensed foam for thermal insulation or buoyancy applications
BS 4377:1991 (R2017) Specification for tapping of holes to receive wire thread inserts (ISO metric threads) partTitleEN sectionTitleEN
BS 5510:1991 Methods for determination of maximum speeds of agricultural wheeled tractors
BS 5672:1991 Specification for designation of the direction of rotation and of cylinders and valves in cylinder heads, and definition of right-hand and left-hand in-line engines and locations on an engine for reciprocating internal combustion engines
BS 5731:1991 Specification for mountings and apertures for external equipment controls on agricultural and forestry tractors
BS 3900-A5:1991 Methods of test for paints - Large-scale brushing tests for paints and varnishes
BS 7440:1991 Method for calibrating field pyrheliometers by comparison to a reference pyrheliometer
BS 5226:1991 Code of practice for equipment and procedures for the cleaning and disinfecting of milking machine installations
BS 5925:1991 Code of practice for ventilation principles and designing for natural ventilation
BS 718:1991 (R2012) Specification for density hydrometers partTitleEN sectionTitleEN
BS 3762-0:1991 Analysis of formulated detergents - General introduction