34
Chapter 6. Objectives
A16.1098
6.3Phase contrast observation
（
Figure 37
）
①
Trinocular viewing tube---
higher and lower deflector rob
Condenser -----PH1
、
PH2
、
PH3
Middle ratio nosepiece---1X
Multi-function mode--- Transmis
sion mode(Figure identity 3)
Side port nosepiece-----
②
The ratio of phase contrast o
bjective is matched with the ma
rks of condenser phase contrast.
PH1/10X-20
、
PH2/40X\PH3/60X.
Center the phase contrast ring
，
If the phase contrast is not
centered,you can center it with
1.5mm
hexagonal
screw
provided.Please follow the steps:
a
、
Put the sample on the specim
en preparation plate and focus o
n it.
b
、
Pick eyepieces out and insert
the centering telescope into ey
epiece tubes.
Figure 37
