ASTM C50

The following practices are to be used in obtaining samples that are representative of the lot being sampled. The methodology used will be dependent upon the size and type of material sampled and testing requirements.

The following practices are intended for use in obtaining samples from material that is ready for sale and are not intended as sampling procedures for quality control purposes. These practices are to be used in obtaining a laboratory sample that will yield results serving as a basis for acceptance or rejection of the lot of material sampled. This does not preclude the use of these practices for quality control purposes.

The following practices can be used to eliminate bias in sampling. The person or persons responsible for using these practices must be trained and they will be conscientious and timely in their use.

An agreement between the producer and the consumer on location of sampling, either at the producer’plant or at the destination, is encouraged. Product quality can be affected through careless handling, improper protection, and delayed shipment. It is preferable to sample at the point of loading. The consumer has the right to witness the sampling practices being used.

This practice may be used to provide a representative sample of lime or limestone products. Due to the variability of limestone and lime and the wide variety of sampling equipment, caution must be exercised in all stages of sampling, from system specification and equipment procurement to equipment acceptance testing and actually taking the final sample.

1. Scope

1.1 This practice covers procedures for the collection and reduction of samples of lime and limestone products to be used for physical and chemical tests.

1.2 This practice further covers inspection, rejection, retesting, packing, and marking of lime and limestone products as it may be used in the chemical, agricultural, and process industries.

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.

2. Referenced Documents

C51 Terminology Relating to Lime and Limestone (as used by the Industry)
C702 Practice for Reducing Samples of Aggregate to Testing Size
D2234/D2234M Practice for Collection of a Gross Sample of Coal
D3665 Practice for Random Sampling of Construction Materials
D75 Practice for Sampling Aggregates
E105 Practice for Probability Sampling Of Materials
E11 Specification for Wire Cloth and Sieves for Testing Purposes
E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process
E141 Practice for Acceptance of Evidence Based on the Results of Probability Sampling
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods

Index Terms

lime; limestone; packaging; marking; sample preparation; physical and chemical tests; inspection; rejection; chemical, agricultural, and process industries; ICS Number Code 91.100.15

Citing ASTM Standards

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