Ball cell windows for spectrophotometers

A detector cell assembly for use in spectrophotometry wherein a source of radiation is spaced from a photodetector with said cell assembly being positioned between the radiation source and the photodetector, said detector cell assembly comprising:

• a body having a sealed cell therein for holding a sample on which spectrophotometric measurements are to be made;
• a first radiation transparent spherical ball closing a first opening in said cell at which radiation enters said cell, said first spherical ball being in a first direct seal with said cell, said first direct seal being capable of withstanding high pressure;
• a second radiation transparent spherical ball closing a second opening in said cell at which radiation exits said cell, said second spherical ball being in a second direct seal with said cell, said second direct seal being capable of withstanding high pressure;
• and
• wherein said first spherical ball focuses said radiation so that said radiation has a crossed ray pattern within said cell and said second spherical ball directs said radiation to said photodetector for detection.