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3.6 Applying the immersion oil
1) Rotate the objective nosepiece to seat the observing position between the 40X and
100X objectives as shown in
Fig. 4 (a)
.
2) Place a drop of immersion oil on the slide cover as shown in
Fig. 4 (b)
.
3) Rotate the objective nosepiece to seat the 100X objective to the observing position
until you hear a “click” sound.
4) After observing the specimen, use the lens cleaning paper to clean the 100X
objective lens gently and the specimen in time.
5) If it is hard to clean, you need a little bit alcohol to clean the 100X objective lens and
the specimen.
Caution (important):
When you use the 100X objective to observe the specimen, you have to finish
observing the specimen with the 4X, 10X, 40X objectives.
When you use the 100X objective to observe the specimen, you have to apply the
immersion oil on the top of the slide cover.
When you apply the immersion oil with the 100X objective, do not let the immersion
oil to contact with the dry objective lenses (especially the 40X). If the immersion oil
is on the dry objectives lens, please use the lens cleaning paper to clean the
objectives lens in time. The oil will damage the dry objective lenses.
After observing the specimen with the 100X objective, clean the 100X objective lens
first.
3.7 Adjusting condenser
1) Turn the condenser focus knob to raise or lower the condenser.
2) Raise the condenser when using high power objectives and lower it when using low
power objectives.
Note:
The centering of the condenser and the light axis of the objective are factory
adjusted. Do not attempt re-adjustment.
The highest position of the condenser has been factory adjusted. Do not attempt
re-adjustment.
Fig. 4
(b)
(a)
