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Significance and Use
Representative samples of industrial chemicals are required for the determination of chemical and physical properties which are used to establish standard volumes, prices, and compliance with commercial and regulatory specifications.
The objective of sampling is to obtain a small portion (spot sample) of material from a selected area within a container which is representative of the material in the area or, in the case of running or all-level samples, a sample whose composition is representative of the total material in the container. A series of spot samples may be combined to create a representative sample.
Manual and Automatic Sampling Considerations—The selection of manual or automatic sampling devices is part of establishing a sampling plan applied under all conditions within the scope of this practice provided that the proper sampling procedures are followed. Both types of sampling are commonly used for liquid, solid, and slurry sampling and require adherence to the following:
An adequate frequency of sampling must be selected.
The equipment to support manual or automatic sampling systems may be obtained commercially, fabricated from the designs presented in this practice, or constructed as needed to satisfy process design or other specific requirements.
The sampling equipment must be maintained on a regular basis, and the sampling plan adopted must be strictly followed.
1.1 This practice covers procedures for sampling several classes of industrial chemicals. It also includes recommendations for determining the number and location of such samples, to ensure their being representative of the lot in accordance with accepted probability sampling principles.
1.2 Although this practice describes specific procedures for sampling various liquids, solids, and slurries, in bulk or in packages, these recommendations only outline the principles to be observed. They should not take precedence over specific sampling instructions contained in other ASTM product or method standards.
1.3 These procedures are covered as follows:
1.4 This standard does not purport to address all of the safety concerns, 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 precautionary statements are given in Sections 6, 19, 20, 30, 34 and 37.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D270 Method of Sampling Petroleum and Petroleum Products Withdrawn. The last approved version of this historical standard is referenced on www.astm.org.
D2234/D2234M Practice for Collection of a Gross Sample of Coal
E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals
ICS Number Code 71.060.01 (Inorganic chemicals in general); 71.080.01 (Organic chemicals in general)
UNSPSC Code 12000000(Chemicals including Bio Chemicals and Gas Materials)
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ASTM E300-03(2009), Standard Practice for Sampling Industrial Chemicals, ASTM International, West Conshohocken, PA, 2009, www.astm.orgBack to Top