ISO 8672:1993
Air quality; determination of the number concentration of airborne inorganic fibres by phase contrast optical microscopy; membrane filter method

Standard No.

ISO 8672:1993

Release Date

1993

Published By

International Organization for Standardization (ISO)

Status

Withdraw

Replace By

ISO 8672:2014

Latest

ISO 8672:2014

Scope

The principle of the method specified is collecting a sample by drawing a measured quantity of air through a membrane filter by means of a battery-powered sampling pump, transforming the filter from an opaque membrane into a homogeneous optically transparent specimen, sizing and counting the fibres using a phase contrast microscope. The results are expressed as fibres per cubic centimetre of air, calculated from the number of fibres on the filter and the measured volume of air sampled. Limitations of the method are stated.

ISO 8672:1993 history

• 2014 ISO 8672:2014 Air quality - Determination of the number concentration of airborne inorganic fibres by phase contrast optical microscopy - Membrane filter method
• 1993 ISO 8672:1993 Air quality; determination of the number concentration of airborne inorganic fibres by phase contrast optical microscopy; membrane filter method