The identification of illicit drugs presents many problems to the forensic laboratory because there is a broad range of possibilities which must be considered in order for a chemist to arrive at a definite identification. Obviously, this is a task that requires a constant search for new analytical techniques to meet such demands. Furthermore, these new techniques must not only facilitate the testing procedure but must provide the necessary confidence in their results as required by our court system.
This report discusses the design and performance of the Bausch and Lomb 33–84–91 densitometer. Fundamental requirements of design are stated and construction is described on the basis of these requirements. Performance data of the instrument are discussed in detail and records are given to demonstrate its fidelity of reproduction.
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