721057

ISO 8672:1993

Air quality - Determination of the number concentration of airborne inorganic fibres by phase contrast optical microscopy - Membrane filter method

standard by International Organization for Standardization , 02/01/1993

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Full Description

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.

 

Product Details

Published:
02/01/1993
Number of Pages:
25
File Size:
1 file , 1.8 MB
Note:
This product is unavailable in Ukraine, Russia, Belarus
 

Document History

  1. ISO 8672:2014


    Air quality - Determination of the number concentration of airborne inorganic fibres by phase contrast optical microscopy - Membrane filter method

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  2. ISO 8672:1993

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    Air quality - Determination of the number concentration of airborne inorganic fibres by phase contrast optical microscopy - Membrane filter method

    • Historical Version