Spectrophotometry and fluorometry. Quartz and optic glass cells. All types and sizes. Ask for a catalog of the ones most frequently used and their prices. All products are according to rigorous rules of manufacture and they are under warranty. For most information go to: maria kaziope y asoc mariakaziope at gmail dot com quartz, glass, cells, spectrophotometry, fluorometry, biochemists, chemical, laboratories, quality, control, universities.