Active Standard ASTM D7756 Developed by Subcommittee: D02.H0
Book of Standards Volume: 05.04
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Significance and Use
5.1 Control over the residue content as specified in Specification is of considerable importance in end-use applications of LPG. Oily residue in LPG is contamination which can occur during production, transportation, or storage.
5.2 This test method is quicker and much more sensitive than manual methods, such as Test Method , which is based on evaporation of large sample volumes followed by visual or gravimetric estimation of residue content.
5.3 This test method provides enhanced sensitivity in measurements of heavier (oily) residues, with a quantification limit of 10 mg/kg total residue.
5.4 This test method gives both quantitative results and information about contaminant composition such as boiling point range and fingerprint, which can be very useful in tracing the source of a particular contaminant.