Operating Instructions - Bresser National Geographic 90-39100 Instrucciones De Uso

Operating instructions

Parts overview:
B 10X WF eyepiece
C
16X WF eyepiece
D
Barlow lens
E
Electronic eyepiece (MicrOcular)
F Microscope head
G Objective revolver
H
Microscope stage
I
Focus wheel
J
LED lighting (transmitted light)
1) Electricity supply
1!
Microscope base
1@
Main plug
1#
5 slides, 10 covering glasses and 5 preparations in a plastic box
1$ Colour fi lter disc
1%
LED lighting (refl ected light)
1^
Direct light/transmitted light switch
1&
Microscope tools: a) pipette; b) tweezers
1* Hatchery
1(
MicroCut
2)
Specimens: a) yeast; b) gum media (specimen inclusion medium); c)
sea salt; d) brine shrimp eggs
2!
Locking screw
2@
Photomizer Software
1. General/Location
Make sure you position your microscope on a stable, solid surface. An electricity
supply is required for observation with the electric illuminator.
Position your device so that it can be disconnected from the power supply at any
time. The wall you use socket should be located near the device and easily ac-
cessible, since the plug on the power cord serves as a disconnecting device for
the power supply. Always pull on the plug to separate the device from the power
supply. Never pull on the cord.
2. Electric LED lighting
Before use, make sure the light switch (16) is set to 'off'.
The microscope has two light sources. Lighting can be of three types. Set the switch
(16) to 'II' to light the specimen from above (refl ected light) or 'I' to light it from below
(transmitted light). Use setting 'III' to light the specimen simultaneously by transmit-
ted and refl ected light. The transmitted light unit (9) is used for transparent speci-
mens (those on glass slides). To view solid, non-transparent specimens, use the
refl ected light unit (15). Use of both forms of lighting simultaneously is only recom-
mended for semitransparent specimens. This operating mode is not recommended
for transmitted light specimens on slides as it may cause refl ection on the slide.
3. Colour fi lter disc
The colour fi lter (14) under the microscope table (7) aids in viewing very bright and
transparent objects. Just select the right colour for the specimen in question. The
components of colourless or transparent objects (e.g. starch particles, single-cell
specimens) can thus be better recognised.
4. Microscope setup
The microscope head (5) will now be prepared for your fi rst observation. First, loosen
the screw (21) and rotate the head into a convenient position. Begin every observation
with the lowest magnifi cation. Place the microscope's table (7) with the focus knob (8)
into the lowest position and rotate the objective revolver (6) until it locks on the lowest
magnifi cation (4X).
EN
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