Standard Test Method for
Vibratory Packing Density of Formed Catalyst Particles and
Catalyst Carriers1

This standard is issued under the fixed designation D 4180; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of 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 covers the determination of the vibratory packing density of formed catalyst and catalyst carriers.
For the purpose of this test, catalyst particles are defined as
extrudates, spheres, or formed pellets of 0.8 to 4.8-mm (1⁄32 to 3⁄16-in.) nominal diameter.

1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
only.

1.3 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

2.1 ASTM Standards: 2
D 3766 Terminology Relating to Catalysts and Catalysis
E 177 Practice for Use of the Terms Precision and Bias in
ASTM Test Methods
E 456 Terminology Relating to Quality and Statistics
E 691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method

3. Terminology

3.1 Definitions—See Terminology D 3766.

4. Summary of Test Method

4.1 A preconditioned sample of formed catalyst or catalyst
carrier is vibrated in a cylinder. The vibratory packing density
is determined from a known mass and vibrated volume.

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