ASTM-D6849 › Historical Revision Information
Standard Practice for Storage and Use of Liquefied Petroleum Gases (LPG) in Sample Cylinders for LPG Test Methods
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Scope
1.1 This practice covers information for the storage and use of LPG samples in standard cylinders of the type used in sampling method, Practice D 1265
1.2 This practice is especially applicable when the LPG sample is used as a quality control (QC) reference material for LPG test methods, such as gas chromatography (GC) analysis (Test Method D 2163
Significance and Use
LPG samples can change composition during storage and use from preferential vaporization of lighter (lower molecular weight) hydrocarbon components, dissolved inert gases (N2, Ar, He, and so forth) and other dissolved gases/liquids (NH3, CO2, H2S, H2O, etc.). Careful selection of cylinder type, cylinder volume, and use of inert gas for pressurizing cylinders is required to ensure that composition changes are small enough to maintain the integrity of LPG when used as a QC reference material for various LPG test methods.
Monitoring of ongoing precision and bias on QC materials using control chart techniques in accordance with Practice D 6299
Keywords
floating piston cylinder; liquefied petroleum gas (LPG); LPG sample storage cylinders; quality control (QC); standard 80% fill cylinder; Composition analysis--petroleum products; Floating piston cylinder; Liquefied petroleum cylinder; LPG (liquefied petroleum gases)--sampling; Monitoring--petroleum testing; Quality control (QC)--petroleum products/applications; Storage--petroleum products/applications; ICS Number Code 75.200 (Petroleum products and natural gas handling equipment)
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05.03 (Petroleum Products and Lubricants (III): D6138 - D6971)
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Document Number
ASTM-D6849-02(2007)
Revision Level
2002 R07 EDITION
Status
Superseded
Modification Type
Reapproval
Publication Date
Dec. 1, 2007
Document Type
Practice
Page Count
4 pages
Committee Number
D02.08