Mulls perfluorokerosene

Powders or solids can be examined as a thin paste or mull (mineral oil, nujol, hexachlorobutadiene, perfluorokerosene) or through the pellet technique which allows quantitative analyses to be performed since accurate measurements can be made of the ratio of weight of sample to internal standard in each disk. Modern technique using diamond ATR is removing the need for mulls and disks. 

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