Safety Device - Euromex BioBlue Serie Manual Usuario

6.2 Setting the illumination
For optimum effect in contrast and resolution one should follow the below procedure:
Place a specimen on the object stage and focus using the 4x objective, with a fully opened Köhler
and iris diaphragm.
 Turn the condenser in the highest position.
 Close the iris diaphragm, until it is just visible on the edge of the field of view.
The microscope is properly set for use with the 4x objective. For each other magnification this
procedure should be repeated to ensure the best balance between contrast and resolution.
Caution:
The maximum light intensity when using the 4x and 10x can damage the eyes!
When changing slides always start with the 4x objective again.

6.3 Safety device

To prevent damage to the objective lens, or breaking the slide, all types are equipped with a pre-
fixed safety device.
It is recommended to use slides of 1.0 – 1.2 mm thickness (product numbers: PB.5150, PB.5155,
PB.5160) in combination with cover glasses of 0.13 mm or 0.17 mm thickness (product numbers:
PB.5165, PB.5168).
6.4 Use of the S100x oil-immersion objective
De BB.4250 and BB.4260 microscopes are equipped with a S100x N.A. 1.25 oil immersion
objective. Please follow these instructions for using this objective:
 Focus the image with the S40x objective.
 Turn the revolving nosepiece so the S100x objective almost reaches the click-stop.
 Put a small drop of immersion oil on the centre of the slide.
 Now turn the S100x objective so that you feel the click stop.
 The front lens is in contact with the immersion oil.
 Look through the eyepiece (O) and focus the image with the fine adjustment knobs (I).
 The distance between the lens of the objective and the slide is only 0.14 mm!
 In case there are small bubbles visible turn the S100x objective a couple of times left/right so
that the front of the objective moves in the oil and the bubbles will disappear.
 After using the S100x objective turn the table (G) with the fine adjustment knobs (I) downwards
until the front lens doesn't touch the oil any longer.
 Always clean the front lens of the S100x objective with a piece of lens paper that is moistened
with a drop of xylol or alcohol.
 Clean the slide after use as well.
The S100x can also be used without immersion oil (dry). Please be aware of the fact that in such
case the resolution will be much lower!
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