Boats for aperture cleaning

These boats accommodate several aperture discs which should be heated in a vacuum chamber to bright red heat for cleaning. These are well suited for heat cleaning of molybdenum or tantalum apertures and the evaporation of powders.

To clean apertures: pre-clean aperture in solvent (chloroform). Place aperture in boat and bring to 10^-4 pascal. Heat for 5 minutes to cherry-red only. Leave to cool prior to venting.

Thickness 0.05mm.