Fluorometer Optical Glass and Quartz Cuvettes are sintered-quartz powder fused with strict adherence to USA and European standards, and shipped in protective cases containing two individually matched & wrapped cuvettes. Suitable for use with heavy solvents, ultrasonic cleaning, autoclave or direct flame sterilization, InLab Cells are guaranteed compatible with all major spectrophotometer brands. Ask for a catalog of the ones most frequently used and their prices. For most information go to: MARIA KAZIOPE Y ASOC