Bresser Dark field condenser dry Black. Very transparent preparations will be intensified in its contrast. The background is dark only the object is lit. Specifications for Bresser Dark field condenser dry: Manufacturer: Bresser Magnification: 1 x Diameter: 37 mm Color: Black Magnification Type: Fixed Package Contents: Bresser Dark field condenser dry Bresser 59-42190: Dark field condenser dry Black