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Area Percentage Charts to Aid Visual Estimation of Asbestos Concentration in Bulk Asbestos Samples


2022, Volume 69:4, pp. 160 – 162


Shu-Chun Su

Among the methods of quantifying asbestos contents in bulk asbestos samples, the most frequently used is the visual estimation. This paper presents a series of reference area percentage charts, featuring fibrous morphology to imitate asbestos fibers in a non-fibrous matrix. These charts can be used in the training of bulk asbestos analysts to better perform the calibrated visual estimation (CVE) of the area percentage of asbestos fibers in bulk samples.

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