Semi-Automatic Biochemistry Analyzers a tabletop unit that analyzes using unit kinetics, end point, and two-point methods. It has an absorbance range of 0 to 2.5 abs and a hermetic solid-state optical system as well as eight hard membrane filters. With a titanium alloy flow cell and a dot-matrix back light LCD display for easy parameter observation, the unit is designed with an easy-to-use serial interface for accurate data monitoring at regular intervals.