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.
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Starna
Type 55, 56, 57, 58 Tandem or Divided Rectangular Quartz Fluorometer Cells
Sale priceFrom $281