Diffraction Standard - Camera Length TEM Grids NPL or ISO 9000 Compliance

NPL or ISO 9000 Compliance

An inexpensive way to store 10

fully compatible with TEM holders and with EasyGrip™ edges for improved handling

Square Mesh Pitch µm Hole µm Bar µm % Transmission 75 339 284 55 70 100 254 204 50 65 200 127 90 37 50 300 85 54 31 40 400 64 38 26 35

Diffraction Standard - Camera Length TEM Grids NPL or ISO 9000 ComplianceDESCRIPTION Evaporated Aluminum The nominal value of the effective camera length of an EM operating in the selected area mode is not sufficiently accurate for calculations of lattice spacing. The actual value of camera length must be calibrated at the same accelerating voltage and objective lens setting by reference to a known substance with well defined diffraction spacings. A normal specimen is evaporated film of aluminum with a thickness of around