This Malaysian Standard covers the equipment and procedures for obtaining a representative sample of specification liquefied petroleum gas (LPG), such as specified in MS 158, Specification of LPG and comparable international standards. It may also be used for other natural gas liquid (NGL) products that are normally single phase (NGL mix, field butane and so forth), defined in other industry specifications or contractual agreements.
This Malaysian Standard is not intended for non-specification products that contain significant quantities of undissolved gases (N2, CO2), free water or other separated phases, such as raw or unprocessed gas/liquids mixtures and related materials. The same equipment can be used for these purposes, but additional precautions are generally needed to obtain representative samples of multi-phase products (see Appendix X1).
This Malaysian Standard includes recommendations for the location of a sample point in a line or vessel. It is the responsibility of the