Request InfoMKS Instruments Inc.The Newport 818-MSCOPE photodiode sensor from MKS Instruments Inc. is shaped like a microscope slide to measure optical power at the sample plane in a microscopy setup. Equipped with a silicon photodiode that can measure from 350 to 1100 nm at optical powers between 3 µW to 1 W, the 818-MSCOPE sensor is an ideal solution for fluorescent excitation measurements. The sensor has a footprint of 76 × 25.2 mm to match a standard microscope slide. 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