BS ISO 6521-1. Lubricants, industrial oils and related products (Class L). Family D (compressors). Part 1. Specifications of categories DAA and DAB (lubricants for reciprocating and drip feed rotary air compressors)— 13 стр.
BS ISO 6521-3. Lubricants, industrial oils and related products (Class L). Family D (compressors). Part 3. Specifications of categories DRA, DRB, DRC, DRD, DRE, DRF and DRG (lubricants for refrigerating compressors)— 21 стр.