FluorCal triple labeled glass slides are designed for verifying homogeneity of any illumination system. The macro uniformity substrate combined with extreme photostability allows for consistent calibration and alignment. Ideal uses include aligning fluorescence microscope illumination sources, laser confocal microscopes, photolithography, laser pulse testing, laser delivery systems for optogenetics, nanotechnology and other imaging systems. Available in 1″ X 3″ slide version with or without focus assist stripes. We also have a 1 ½” X 3″ without focus assist stripes. We will consider any custom variation that you might need