User programmable Test Program Memory. Random Access Operation & Profile Programming. Extensive Quality Control Program with LJ Graph High Quality Long Life Interference Filters. Modular digital electronic circuit, auto-calibration & gain adjustment. World Class Photocell with extended WL range covers 320~1000nm Photometric Linearity up to 4.000au. Repairable, Metallic Micro-Flow Cell Selection of Manual Cuvette Position by sliding the flow cell Bi-Directional Peristaltic Pump Durable Thermal Line Printer Over 1000 installation & proven performance