Fluorometer cells have at least three windows clear. They are designed for use in a fluorometer which passes an excitation beam through the cell and then reads the fluoresence emission at a 90 degree angle. There are many variations on this theme and Starna makes a wide range of cells to allow you to use everything from normal full volume cells to very small volumes.
Starna
Type 55, 56, 57, 58 Tandem or Divided Rectangular Quartz Fluorometer Cells
Sale priceFrom $281