ASTM D2013/D2013M-24 PDF

Full title and description

St ASTM D2013/D2013M-24 — Standard Practice for Preparing Coal Samples for Analysis. Provides procedures for reducing, dividing and preparing coal samples (including composite samples) from gross or previously divided samples to sizes and masses suitable for laboratory analysis; includes provisions for on-line and off-line reduction, air drying where required, and separate treatment for cleaned coals (Group A) and other coals (Group B).

Abstract

This practice describes accepted methods to reduce and divide coal samples—by mechanical and manual means if necessary—and to prepare analysis portions and composite samples. It addresses sample reduction sequences, sample mass and top-size requirements for different coal groups, air-drying where specified, and the handling of units in both SI and inch‑pound systems (each system to be used independently). The document is intended to minimize preparation bias and to produce representative analysis samples.

General information

• Status: Active.
• Publication date: November 13, 2024 (2024 edition).
• Publisher: ASTM International.
• ICS / categories: Coals — ICS 73.040 (Coal).
• Edition / version: D2013/D2013M-24 (2024 edition).
• Number of pages: 14 pages.

Scope

The practice covers reduction and division of gross or previously divided coal samples and the preparation of composite and analysis portions suitable for laboratory testing. Procedures are specified for two coal groups (Group A — cleaned coals; Group B — all other or unknown coals), with Group A allowing smaller retained laboratory sample masses when justified by demonstrated variance. The standard also clarifies unit usage (SI and inch‑pound systems are independent) and notes that users are responsible for applicable safety and regulatory practices.

Key topics and requirements

• Procedures for mechanical and manual reduction and division of coal samples to a specified top size and mass for analysis.
• Classification of samples into Group A (cleaned coals) and Group B (other/unknown coals) with differing retained sample mass guidance.
• Instructions for preparing composite samples and for selecting representative analysis portions.
• Requirement to use SI or inch‑pound units independently (do not combine values from both systems).
• Reference to air-drying procedures and air‑dry loss determination where required (see Test Method D3302/D3302M).
• Emphasis on avoiding and recognising bias introduced before sample reduction and division.

Typical use and users

Used by commercial and research laboratories, coal producers and processors, coal trading and quality control personnel, power generation plant laboratories, shipping and inspection agencies, and regulatory bodies. Typical applications include preparing laboratory samples for proximate/ultimate analysis, calorific value testing, sulfur/moisture analysis, and quality assurance in coal handling and trading.

Related standards

Commonly referenced and complementary standards include: Practice D2234/D2234M (gross sample collection and initial division) and Test Method D3302/D3302M (air‑drying and air‑dry loss determination). Users should consult the normative references listed in the practice for other related methods and guides.

Keywords

coal, sample preparation, sample reduction, sample division, composite sample, analysis sample, Group A, Group B, air-drying, SI units, inch‑pound units.

FAQ

Q: What is this standard?

A: ASTM D2013/D2013M-24 is a practice that specifies methods for preparing coal samples for laboratory analysis, including reduction, division and composite preparation.

Q: What does it cover?

A: It covers procedures to reduce and divide gross or previously divided coal samples to obtain representative analysis portions, classification of coal groups for sample mass requirements, composite sample preparation, and unit system use (SI vs. inch‑pound). It also references air‑drying procedures where applicable.

Q: Who typically uses it?

A: Laboratory analysts, quality/control technicians in coal production and power generation, cargo inspectors, trading and procurement teams, and regulatory agencies responsible for coal sampling and testing.

Q: Is it current or superseded?

A: Current — the 2024 edition, D2013/D2013M-24, is the active version (last updated/published November 13, 2024). Users should check the publisher for any amendments or revisions after that date.

Q: Is it part of a series?

A: Yes — it is part of ASTM’s D05 series (Coal and Coke standards) and is linked by practice and method references to other ASTM coal sampling and testing standards (for example, D2234/D2234M and D3302/D3302M).

Q: What are the key keywords?

A: Coal sample preparation, reduction, division, composite sampling, Group A/Group B coal, air‑drying, representative analysis sample, SI and inch‑pound units.