PURPOSE: used to see Live Bacteria in Water or other unstained transparent specimens.

Principal:

Bright field microscopy is the conventional technique. It is suitable for observing the natural colors of a specimen or the observation of stained samples. The specimen appears darker on a bright background.

Darkfield microscopy shows the specimens bright on a dark background. Brightfield microscopes that have a condenser with a filter holder can be easily converted to darkfield by placing a patch stop filter into the filter holder. Phase contrast microscopy requires special phase contrast objectives and a special phase contrast condenser. This technique is useful for observing unstained specimens that lack a color (eg. bacteria). The optics will convert the differences in refractive index of the specimen into brightness differences. This will cause transparent object to appear brighter or darker than their background. Phase contrast is expensive but sometimes necessary to see certain structures in living and unstainedcells

SPECIFICATIONS

Body                :           Main body all parts die casted to provide long life,Slide and objective protection via upward stagestopper.

EyePieces        :           wide field 10x, 15x pairs Objectives: semi-plan achro objectives 4x, 10x, 40/45x s. L. 100x oil immersion (s. L.).with clarity 1.Phase contrast Objective 100x(fitted with phase plate as illustrated above) and 2.Phase condenser(Fitted above the condensore) SET it is metallic 3 inchesround