Search
Documentation Center

Void-counting in assessing membrane filter samples of asbestos fibre
Fichero PDF / PDF file
MAP20071017433
Attfield, M.D. ‌
Void-counting in assessing membrane filter samples of asbestos fibre / M.D. Attfield and S.T. Beckett
Sumario: Fibre counting is a onerous and time consuming task. The blank field method has been proposed as a means of easing that task. In this, successive microscope graticule areas are scanned and note is made of those void of fibres. At some defined stopping point the fibre density is estimated from a function of the total number of voids and total areas scanned. This approach was used in two planned experiments to investigate the bias, the variability, and the time savings of the method compared with the standard technique of fibre counting
En: The Annals of occupational hygiene. - Oxford [etc.]. - nº 3, 1983 ; p. 273-282
1. Higiene industrial ‌. 2. Contaminación atmosférica ‌. 3. Control de la contaminación ‌. 4. Partículas ambientales ‌. 5. Amianto ‌. 6. Muestreos ‌. 7. MFM ‌. 8. Void-counting ‌. 9. Métodos de análisis ‌. I. Beckett, S.T. ‌. II. Title. III. Título: The Annals of occupational hygiene.