1.1 ,This practice covers the collection of settled lead-containing dust on surfaces using the wipe sampling method. These samples are collected in a manner that will permit subsequent extraction (see Practices E1644 and E1979) and determination of lead using laboratory analysis techniques such as atomic spectrometry (see Test Methods E3193/E3193M and E3203) or electroanalysis (see Practice E2051). For collection of settled dust samples for determination of lead and other metals, use Practice D6966.