Labsphere port reducers are intended for changing the port size without any interference on the integrating sphere. These reducers are important for achieving efficient light collection and precise measurement in spectroscopy and radiometry applications. Labsphere offers a number of port reducers so that the integrating spheres can be used with various source sizes, or detector configurations. These reducers are built to high standards with quality materials and ensure that there is little to no light lost, and they are very precise, which makes them a very important part of any integrating sphere setup.