Hi Javier

If you are using the condensers in their original form they won't
mechanically 'fit'.

Zeiss 'Standards' and the Photomicroscope series have a 'snap in'
circular dovetail fitting. The Photomicroscope series also have the
whole condenser assembly mounted in a 'quick release' fitting.

The earlier Zeiss Jena microscope condensers had the cylindrical
barrel mounting type with some better models also having quick
release fittings for the whole assembly as well. I have not found any
of these fittings interchangeable between the makes.

If you can make adapters there is no reason why Jena condensers
shouldn't work on Zeiss West microscopes, but this would probably
involve machining parts. The Jena optical quality is at least as good
as the Zeiss West kit.

Ray