-40%
1 inch diameter HAND-POLISHED Germanium Metal Disk 99.999% 5g Element Ge Sample
1 inch diameter HAND-POLISHED Germanium Metal Disk 99.999% 5g Element Ge Sample

1 inch diameter HAND-POLISHED Germanium Metal Disk 99.999% 5g Element Ge Sample

$ 21.12

Availability: 60 in stock
  • Condition: New
  • Country/Region of Manufacture: China

    Description

    Material: monocrystalline Germanium.
    Purity:99.999%
    Type:N.
    Resistivity:5-40ohm.cm.
    Diameter:1 inch(25.4mm).
    Thickness:2mm.
    Surface quality: 2 sides and cylinder polished.
    This disk was plished by hand, follow optical polishing grade close to S/D:80/50, it could be coated and assembled into a Germanium lens.
    Perhaps on the ebay, it is the finest surface quality Germanium product.