Colorimetric detection tube having porous packing matter which has display section with indicator

Abstract

Abstract PURPOSE: To perfectly detect the discoloration of a material to be inspected with a plurality of pre-treating and indicating sections by constituting a colorimetric detecting tube by alternately providing the pre-treating sections and indicating sections. CONSTITUTION: A plurality of layered pre-treating sections 4 and indicating sections 5 are provided in a colorimetric detecting tube 1 by connecting the sections 4 and 5 in series to each other. The filler 8 of the sections 4 holds a pretreating material and the filler 8 in the sections 8 hold an indicator. A material to be inspected is sucked into and passed through the tube 1 as shown by the arrow 3, pretreated in the sections 4, and discolored with the indicator in the sections 5. Therefore, the material to be inspected can be detected. When, for example, hydrogen is to be detected, steam is generated in the first pre-treating section 4 holding a palladium catalyst and the steam is discolored in the first indicating section 5 impregnated with selenium dioxide and sulfuric acid. After the discoloration is completed in the first indicating section 5, the steam is further discolored in the second indicating section 5. Since the tube 1 has a plurality of pre-treating sections and indicating sections, the material to be inspected can be detected with high accuracy.

Inventors

• 👤 Bomaa Rainaa

Bibliographic Details