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HIGH MAGNIFICATION GRATING REPLICA Cross ruled (waffle), 2160 lines/mm (54864 lines/"), carbon replica.$105.00COMBINED TEST SPECIMENThis test specimen is made on a holey carbon film which has been shadowed with gold and a coating of graphitised carbon particles. Particles protruding over the edge...$146.00NICKEL/CHROMIUM ION SPUTTER CALIBRATION STANDARDNickel/chromiumConsisting of 12 alternating layers: 6 layers of Cr (~53nm) and 6 layers of Ni (~64nm) for a total thickness of ~700nm with a maximum variation...$1,288.00TANTALUM PENTOXIDE ION SPUTTER CALIBRATION STANDARDTantalum pentoxide (Ta2O5)Films of tantalum pentoxide (100nm) are anodically grown on 0.5mm thick tantalum foil. The standards measure 37 x 37mm. The thickness accuracy is...$665.00MAG*I*CAL A MAGNIFICATION CALIBRATION SAMPLE FOR TRANSMISSION ELECTRON MICROSCOPESProSciTech is proud to introduce the world's smallest ruler (5 micrometers) for the calibration of Transmission Electron Microscopes.The MAG*I*CAL has been developed...Price on RequestEHI98703 portable turbidity meter utilises an EPA compliant tungsten light source and state-of-the-art optical system that allows consistently reliable and accurate measurements for turbidity. Users will appreciate the accuracy and...$214.00