This standard specifies methods for obtaining a reduced sample of surface active agent or detergent suitable for use with single or mixed products, in the form of powders, pastes or liquids. This sample reduction process may be required for the following reasons: a) The preparation of final sample or laboratory sample of mass greater than 250g from a blended bulk sample mass greater than 500 g. b) The preparation of several equivalent laboratory samples and/or reference and/ or storage samples, each of mass greater than 250 g, from a final sample; c) The preparation of a test sample from a laboratory sample.