This International Standard specifies performance requirements for battery powered pumps used for personal sampling of chemical and biological agents in workplace air. It also specifies test methods in order to determine the performance characteristics of such pumps under prescribed laboratory conditions. This International Standard is applicable to battery powered pumps having a nominal volume flow rate above 10 ml Å" min"1, as used with combinations of sampler and collection substrate for sampling of gases, vapours, dusts, fumes, mists and fibres. This International Standard is primarily intended for flow-controlled pumps.