These products are similar to petroleum products; many sampling procedures used for petroleum products are equally applicable to the former. Specifies the obtaining of samples from fixed tanks, railcars, road vehicles, barges and drums and from liquids being pumped in pipelines. The samples are intended to be used determine quality, for testing whether contaminants are present and for the determination of the degree of homogeneity of a batch. General recommendation and specific recommendations for hazardous, flammable and toxic substances are given and also the treatment of mobile liquids at low ambient temperatures is indicated.