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

Authors
ISO
Source
Geneva: International Organization for Standardization, ISO 8672:1993, 1993 Jan; :1-25
NIOSHTIC No.
20031324
Abstract
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.
Keywords
Analytical-methods; Analytical-processes; Workplace-monitoring; Air-sampling; Air-sampling-techniques; Inorganic-compounds; Microscopy; Microscopic-analysis
Publication Date
19930101
Document Type
Book or book chapter
Fiscal Year
1993
NTIS Accession No.
NTIS Price
NIOSH Division
DART
Source Name
Air quality -- Determination of the number concentration of airborne inorganic fibres by phase contrast optical microscopy -- Membrane filter method
State
OH
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