Request InfoMKS Instruments Inc.The PD300-MS microscope slide power meter from Ophir has been announced by MKS Instruments Inc. The PD300-MS measures power levels of high numerical aperture objectives, from 5 µW to 1 W. A special filter provides low angular dependence, enabling higher-accuracy measurements. NIST-traceable calibration allows for measurement of wavelengths from 350 to 1100 nm. To accommodate limited space, it has the same footprint as a standard microscope slide. 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