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BS 2000-143:1985

Methods of test for petroleum and its products-Asphaltenes in petroleum products (precipitation with normal heptane)
standard by BSI Group, 02/28/1985

BS 1542:1982

Specification for equipment for eye, face and neck protection against non-ionizing radiation arising during welding and similar operations
standard by BSI Group, 12/31/1982

BS 1449-2:1975

Steel plate, sheet and strip. Specification for stainless and heat-resisting steel plate, sheet and strip
standard by BSI Group, 08/29/1975

BS 109:1922

Air-break knife switches and air-break isolating switches for voltages not exceeding 660 volts excluding totally-enclosed and flame proof types
standard by BSI Group, 01/30/1933