||The upgrade consists of the state-of-the-art C-PH N.A. 0.8 Phase Contrast
condenser and three (UP-PH3: 10 X 0.30, 20 X 0.40, 40 X 0.65] or four (UP-PH4: 10 X 0.30,
20 X 0.40, 40 X 0.65, 100X1.25 Oil) EAP-Series
Phase Achromatic objectives. The Condenser incorporates phase annulus rings
for 10X, 20X, 40X, 100X objectives, and a Brightfield position. The phase
annuli are easily centerable
with two knurled alignment knobs and the provided centering telescope (CT-4). Other features
are an aperture diaphragm, a swing-out filter holder and a green filter (FG-33).