The Roche Hitachi 704 Chemistry Analyzer is a fully automated, discrete, and computerized chemistry analyzer. The Roche Hitachi 704 Chemistry Analyzer uses serum, urine, plasma, and CSF sample types to perform in Vitro Quantitative and Qualitative tests on a wide range of alalytes. In addition it is capable of performing potentiometric and photometric assays.   
   
The Model 704 is composed of an analytical unit which produces chemical reactions in samples, an operation unit which inputs/outputs analytical conditions, etc. and a control unit which controls each function required for operation of the instrument.