Phase Contrast Equipment - Phase Contrast technique is used for the study of living objects under the Microscope. Most biological specimens are almost completely transparent and staining not only kills them but also alters their structure in some way. Phase Contrast enables objects and make them visible under the microscope. Phase Contrast Equipment consisting of a PH. contrast condenser, Annular diaphragm turn plate, a centring telescopic eyepiece and 4 PH. objectives PH 10x, PH 20x, PH 40x, PH 100x. HL-23 with PH-101