| 摘要 |
An evacuable KBr die includes a base, a cylindrical barrel, a pellet arranged in a bore of the barrel, a piston which also fits within the bore, and an evacuable pad. O-rings are provided to create seals between the various components. Sample material for analysis is pressed between the piston and the pellet while a vacuum is created at the top and bottom of the sample to remove water vapor from the sample. For this purpose, passages are provided in both the base and barrel to transmit the vacuum from the pad to the upper and lower ends of the bore.
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