Abstract
The method for evaluation of mercury vapor detector tube is described. The apparatus which continuously supplies the constant concentration of gas by means of vapor pressure was designed to prepare the test gas. The dithizone method was adopted for the standard analysis and the accuracy of the detector tubes was checked by identifying the data with the calculated values and the results of dithizone method. Investigating the above method for Kitagawa's mercury vapor detector tube, good agreement of three kinds of values and no variation caused by lot number of detector tubes were observed. Therefore, the proposed method is considered to be adequate for evaluation of mercury vapor detector tubes.
