Use and misuses of detector tubes.
Transactions of the Thirty-Second Annual Meeting of the American Conference of Governmental Industrial Hygienists, May 10-12, 1970, Detroit, Michigan. 1970 May; :142-148
A survey was made of Occupational Health Units to examine detector tube use. Response to the questionnaire indicates that detector tubes should be calibrated by the user. In the absence of such calibration, results should be considered semiquantitative. There is a need for a simple, inexpensive method of calibration. As many samples as possible should be used to determine average concentrations for a single exposure situation. A minimum of five should generally be taken. Decision should be made on a statistical basis or using a student t-test with actual sample data to determine the variance. In general, the survey indicated that detector tubes are used widely but not well. The tubes have serious systematic errors which must be corrected by calibration.
Equipment; Sampling; Contaminants; Accuracy; Instrumentation
Transactions of the Thirty-Second Annual Meeting of the American Conference of Governmental Industrial Hygienists, May 10-12, 1970, Detroit, Michigan