scope:

1. Scope

1.1 This method covers the spectrographic analysis of pig lead for the following elements in the ranges indicated:

1.2 This method is designed for testing specimens in the form of chill-cast disks or miscellaneous lead samples on which a flat surface area of 25 mm (1 in.) in diameter can be prepared. Other forms may be analyzed, provided they are sufficiently massive (about 50 g) to prevent overheating during excitation. For irregularly shaped samples or chipped samples, specimens are slowly heated to the melting point under palm oil and cast in disk form.

1.3 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.