Standard Test Method for
Ball-Pan Hardness of Activated Carbon1
This standard is issued under the fixed designation D 3802; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method provides a procedure for determining
the ball-pan hardness number of granular activated carbons.
For this test, granular activated carbons are
those having particles 90 % of which are larger than 80 mesh
(180 µm) as determined by Test Method D 2862.
1.2 This standard does not purport to address all of the
safety concerns associated with its use if any. It is the
responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations before use.
2. Referenced Documents
2.1 ASTM Standards:
B 19 Specification for Cartridge Brass Sheet, Strip, Plate,
Bar, and Disks (Blanks)2
B 150 Specification for Aluminum Bronze Rod, Bar, and
Shapes2
D 2652 Terminology Relating to Activated Carbon3
D 2854 Test Method for Apparent Density of Activated
Carbon3
D 2862 Test Method for Particle Size Distribution of
Granular Activated Carbon3
D 2867 Test Method for Moisture in Activated Carbon3
E 11 Specification for Wire-Cloth Sieves for Testing Purposes4
E 300 Practice for Sampling Industrial Chemicals5
3. Terminology
3.1 General—Terms applicable to this standard are defined
in Terminology D 2652.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 nominal particle size: natural, granular, and irregularly shaped particle carbons—that particle size range, expressed in terms of Specification E 11 sieve sizes, whose small
end excludes not more than 5 % of the particle size distribution, and whose large end excludes not more than 5 % of the
distribution, on a weight basis.
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