| 摘要 |
PROBLEM TO BE SOLVED: To provide an analytical sample keeping reliability and allowing high-precision measurement over a long period by inserting the sample molded by glass bead method or pressure molding method into a heat contraction polymer film bag, heating the bag, and shrinking a film to be close contact with the sample. SOLUTION: A sample molded by glass bead method or pressure molding method is inserted into a heat contraction polymer film bag, and the bag is heated as it is or while a part of air in the bag is extracted. Since a polymer film is shrunk by heating, it comes into close contact with the surface of the sample uniformly, and it can cover the sample. When the polymer film is closely stuck to the surface of the analytical sample to cover it, the contact between air and the sample is cut off, the analytical sample is protected form breakage at the time of an analysis, and a long-period shelf life can be obtained. Any bag made of heat contraction polymer film may be used, however the film made of polyolefins such as polyethylene or polychlorovinyls such as polyvinyl chloride is preferably used. |
