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1.1 The general availability of gas chromatography in practically every laboratory and the inherent sensitivity in the detection of trace constituents indicate that the technique would qualify as a standard test method. With this one-step technique, impurities can be determined in a range that includes major constituents and parts per million impurities.
1.2 Inherent in this test method is the limitation that the impurities must be volatile. Resolution of some of the individual impurities may be limited by the column selected. The use of several different types of columns may be necessary if the ultimate in resolution is required. A single column will normally give the required degree of separation.
1.3 The values stated in SI units are to be regarded as the standard.
1.4 This standard does not purport to address all of the safety problems, if any, 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. Specific hazards statements are given in Section 8.Note-There is no similar or equivalent ISO standard.