High quality V1 muscovite mica disks that come interleaved in a pack of 10 in four different diameters used in AFM calibration. (15mm size)
Fast drying, alcohol based silver conductive paint for sample mounting and electrical continuity.
High quality magnetic stainless steel (alloy 430) discs for Atomic Force Microscopy. They measure 20mm and come in a 50 pack.