23
BX61WI
Fig. 29
Fig. 30
4-7 Water Immersion Objectives
1
Using Water Immersion Objectives
(Figs. 29 & 30)
}When the UMPlanFl-W series, LUMPlanFl-W series or XLUMPlanFl20XW
objective is used, cultured tissue specimens which are often very thick
can be observed by immersing the specimen, objective front lens and
manipulator extremity in a medium (water) with the same refractive index.
# The electrically insulated area and immersion depth of the objective
1
are shown by the range of
2
.
Do not immerse the entire objective, for this will cause
malfunction.
After every immersed use, be sure to clean the front
lens with neutral detergent.
Water Immersion Cap for XL Objectives XL-CAP
In photometering with a film potential-sensitive fluorochrome, the water sur-
face fluctuations can be reduced and S/N can be improved by fitting this
cap
2
onto the top of the objective
1
(XLFuor2X/340 or XLFluor4X/340).
CAUTION
1
2
1
2
