NYC-WTC_000196132

NYC 9/11 Public Portal Document D5756-95 Standard Test Method for Microvacuum Sampling anMpV/www.a8tni.oig/cgi-oin/s>onuan.cxwv/y

Other users of this i Document Summary standard also « downloaded; *To order theJuli text, see ordering options at lejt. Developed by D57SS: ASTM Test Method D5756-95 Standard Test Method for Standard Test Subcommittee: Microvacuum Sampling and Indirect Analysis of ’ Method for 022,07 Microvacuum Dust by Transmission Electron Microscopy for Sampling and Adoptions: Asbestos Mass Concentration Indirect Analysis of ' Book of Copyright 2001 AMERICAN SOCIETY FOR TESTING AND Dust by Standards MATERIALS, West Conshohocken, PA. AU rights reserved. Transmission Volume: Electron 11.03 Microscopy for 1. Scope Asbestos Order Now: Structure Credii Card Only Number • Download Full 1.1 This test method covers a procedure to () identify asbestos in Concentrations Text (PDF) dust and () provide an estimate of the concentration of asbestos in • Mail Delivery - the sampled dust, reported as either the mass of asbestos per unit D6281: North America area of sampled surface or as the mass of asbestos per mass of Standard Test • Mail Delivery - sampled dust. Method for International Airborne 1.1.1 If an estimate of asbestos structure counts is to be determined, Asbestos Price; $ 35.00 Concentration the user is referred to Test Method D5755. in Ambient and Pages: 13 Indoor 1.2 This test method describes the equipment and procedures Atmospheres as Help Desk necessary for sampling, by a microvacuum technique, non-airbome Determined by dust for levels of asbestos. The non-airbome sample is collected Transmission inside a standard filter membrane cassette from the sampling of a Electron surface area for dust which may contain asbestos. Microscopy Direct Transfer 1.2.1 This procedure uses a microvacuuming sampling technique. (TEM) The collection efficiency of this technique is unknown. Variability of collection efficiency for any particular substrate and across D6480: different types of substrates is also unknown. The effects of Standard Test Method for sampling efficiency differences and variability on the interpretation Wipe Sampling of dust sampling measurements have not been determined. of Surfaces. Indirect 1.3 Asbestos identified by transmission electron microscopy (TEM) Preparation, and is based on morphology, selected area electron diffraction (SAED), Analysis for and energy dispersive X-ray analysis (EDXA). Some information Asbestos about structure size is also determined. Structure Number 1.4 This test method is generally applicable for an estimate of the Concentration concentration of asbestos starting from approximately 0.24 pg of by Transmission Electron asbestos per square centimeter (assuming a minimum fiber Microscopy dimension of 0.5 [mu]m by 0.025 [mu]m, see 17.8), but will vary

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NYC-WTC_000196132