The FocalCheck™ fluorescence microscope test slide #1 is specifically designed for calibrating fluorescence microscope systems and evaluating system and filter performance. The slide contains 10 sample areas coated with FocalCheck™ ring stained microspheres ranging in size from 0.5-15 µm that provide a visual representation of instrument misalignment or other aberrations in row A; row B contains a series of microspheres with fluorescence intensities ranging from 0.667-100%.

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