Airborne asbestos analysis

Abstract

The term NVLAP and the NVLAP logo are registered marks of the Federal Government, which retains exclusive rights to control the use thereof. Permission to use the term and symbol (NVLAP logo with approved caption) is granted to NVLAP-accredited laboratories for the limited purpose of announcing their accredited status, and for use on reports that describe only testing and calibration within the scope of accreditation. NVLAP reserves the right to control the quality of the use of the NVLAP term, logo, and symbol. • Annex A (normative) and Annex B (informative) have been added. This handbook is also available on the NVLAP web site (http://www.nist.gov/nvlap).

Proficiency tests for the NIST airborne asbestos program - 1990

“…Use of these grids in routine work would hinder subsequent relocation of counted squares and verification of counts obtained by operators. The NVLAP handbook (Steel et al, 1989) requires use of finder grids.…”