Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

A performance evaluation of selected long-term gas detector tube units.

Authors
Keane-MJ
Source
Ann Am Conf Gov Ind Hyg 1981 Jan; 1:241-245
Link
NIOSHTIC No.
00126805
Abstract
The performance of long term, or time weighted average, detector tubes was studied. Draeger-CH-28121, Kitagawa-Sipin-TWA-500, and MSA-Model-465519 tubes were tested by exposure to carbon-monoxide (630080) (CO2) at 48.9 and 94.5 parts per million (ppm). Sulfur- dioxide (7446095) exposures tested Draeger-Model-67-28151, MSA-Model- 92623, and Kitagawa-Sipin TWA-503 tubes at concentrations of 4.20, 8.34, and 2.32ppm. The lowest concentration of each was tested at relative humidities of 50 and 90 percent and at dry, while other concentrations were tested at 50 percent relative humidity. Results were compared to known values of the concentrations. In sampling CO2 results were generally good, with high positive bias of MSA tubes at low humidities and high positive biases of Draeger and MSA at low concentrations. Length of exposure also led to positive biases for all tubes. Results for SO2 were fair to good, and were poorer than CO2 results. At high humidities results were not reliable. All types of pump proved acceptable. The author concludes that the long term detector tubes have no substantial negative biases when manufacturers' recommendations are followed. The tendency toward positive bias could lead to increased protection for workers.
Keywords
Analytical-methods; Laboratory-techniques; Air-sampling-equipment; Air-monitoring; Analytical-instruments; Air-sampling; Gas-sampling; Monitors
CODEN
ACGHD2
CAS No.
630-08-0; 7446-09-5;
Publication Date
19810101
Document Type
Journal Article
Fiscal Year
1981
NTIS Accession No.
NTIS Price
ISSN
0733-9313
NIOSH Division
ALOSH
Source Name
Annals of the American Conference of Governmental Industrial Hygienists
State
WV
TOP