Microscopes for phase contrast enables the observation of samples with poor or no contrast which can't be observed with a bright field contrast microscope. It also enables the observation of living organisms without staining them. Microscopes with phase contrast have specific phase contrast objectives and a phase contrast condenser
bScope
Delphi-X Inverso
Delphi-X Observer
Achios-X Observer
iScope
BioBlue.Lab
Oxion
Oxion Inverso (fluorescence)