A good quality crimping tool excels with the following features:
A quality crimper for the laboratory features a chemically resistant surface varnishing
A crimper for the clean room is manufactured from stainless steel. It is resistant to corrosion and heat and can be autoclaved.
Available for the laboratory or the clean room.
Depending on the crimp neck, the properties of the cap beading and the thickness of the septum, the crimping pressure and height have to be adjusted. Even if always the same vial/cap/septum combination is used, these two parameters should be checked and may have to be adjusted each time the crimping tool is reused.
The crimping pressure is adjusted with the adjustable screw in the crimper’s handle.
The crimping height is adjusted with the provided hex-wrench. Hold the crimping tool by its head and put the hex-wrench in the intended recess in the crimping head.
The cap is crimped correctly
The aluminium of the beading sits closely around the crimp neck. The beading is flat and undamaged, the surfaces of both cap and septum are flat.
The cap is overcrimped
The surface of the septum is convex
The cap is undercrimped
The aluminium of the beading does not sit closely around the crimp neck