BS 4359-2:1982

This standard BS 4359-2:1982 Determination of the specific surface area of powders is classified in these ICS categories:

• 17.040.20 Properties of surfaces

This Part of this British Standard describes recommended methods for determining the permeability surface area of powders by measuring the resistance offered to the flow of air through a compacted bed of the powder.

The methods are applicable to powders with permeability volume specific surfaces in the range 2 × 10⁴ m²/m³ to 5 × 10⁷ m²/m³.

Four specific methods are described in appendices B to E.

Use of the permeability methods is precluded when:

1. agglomerates are not easily broken down (unless the specific surface area required is that of the agglomerated form);
2. the particles fracture or undergo deformation when the powder bed is being compacted.

NOTE. The titles of the publications referred to in this standard are listed on the inside back cover.

Describes four commonly used methods for determining the permeability surface area of powders.