NYC-WTC_000196132

NYC 9/11 Public Portal Document

D5755-95 Staodard Test Method for Microvacuum Sampling aniSpJ'/www.astm.org/cgi-bin/SoftCart.exc/DATABASE.CART/PAG...

aggregated asbestos into fundamental fibrils, fiber bundles, clusters, or matrices that can be more accurately quantified by transmission electron microscopy. However, as with all indirect sample preparation techniques, the asbestos observed for quantification may not represent the physical form of the asbestos as sampled. More specifically, the procedure described neither creates nor destroys asbestos, but it may alter the physical form of the mineral fibers.

1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents DI 193 Specification for Reagent Water D1739 Test Method for the Collection and Measurement of Dustfall (Settleable Particulate Matter) D3195 Practice for Rotameter Calibration D3670 Guide for Determination of Precision and Bias of Methods of Committee D-22 D5756 Test Method for Microvacuum Sampling and Indirect Analysis of Dust by Transmission Electron Microscopy for Asbestos Mass Concentration

Index Terms

asbestos structure

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CITY_21MC100_003038193

NYC-WTC_000196133