High quality magnetic stainless steel (alloy 430) discs for Atomic Force Microscopy. They measure 20mm and come in a 50 pack.
High quality V1 muscovite mica disks that come interleaved in a pack of 10 in four different diameters used in AFM calibration. (15mm size)
Stainless Steel Specimen Discs in 12mm & 15mm (10 Pack). Choose your size disc from the dropdown menu.
High quality V1 muscovite mica disks - pack of 20
15mm diameter, 0.15mm thick