Disc apertures, gold foil (EMS)

Advanced techniques of thin metal film application permits the apertures to retain a clean hol...

from $111.00
Wehnelt apertures, tantalum

Made from 0.004" tantalum foil. Replaceable tantalum apertures for some microscopes (AMRAY and...

from $239.00
Pinhole apertures

These pinholes are prepared from pure copper foil, 3mm in diameter, 25µm thick. They possess v...

from $312.00
Disc apertures, platinum (EMS)

Apertures are easily cleaned by either an aperture flamer or over a bunsen burner in the open ...

from $159.00