MicrobeHunter.com Microscopy Forum

Mike - indeed, the major problem was dirt and dried grease around the brass disk under the condenser top plate. I cleaned it carefully with a minimum of light petrol, which improved the phase allignment tremendously. Regarding the condenser rack, I loosened the counter-screw (the one that is coaxial...

Mike - many many thanks!!!

Yes, the lever ("knob") is lockable and functions OK. Only the other level ("knurled disk/ring") is troublesome. I will try and follow your advice.

Thanks photomicro, here are some photos. The base is round, the substage plate is removable, no model name is inscribed on it so I thought it was GFL... I have upgraded the condenser rack by adding a third filter/lens holder (from a spare condenser rack), but this change is not related to the proble...

Hello I would appreciate an advice for maintenance of a phase contrast Zeiss condenser, Achromat-Aplanat model Z III 6 (or similar) for an old but usable Zeiss W GFL microscope. It has the following positions: brightfield, darkfield, (missing) DIC prisms, Ph2 and Ph3. There are three separate proble...