Bresser Junior Biolux SEL Instrucciones De Uso página 15

starch, protozoa).
How do I adjust my microscope correctly?
Each observation starts with the lowest mag-
nification.
Adjust the microscope
 stage (9) so that it goes
all the way down to the
lowest position. Then,
turn the objective nose-
piece (6) until it clicks
into place at the lowest
magnification (objective 4x).
Note:
Before you change the objective setting, always
move the microscope stage (9) to its lowest
position. This way, you can avoid causing any
damage!
Now, insert the 10x eye-
B/C
piece (1) into the Barlow
lens (3). Make sure that
D
the Barlow lens is
placed all the way into

the eyepiece supports
(4) and is not pulled out.
How do I observe the specimen?
After you have assembled the microscope with
the adequate illumination and adjusted it cor-
rectly, the following basic rules are to be ob-
served:
Start with a simple observation at the lowest
magnification. This way, it is easier to position
the object in the middle (centering) and make
the image sharp (focusing).
The higher the magnification, the more light you
will require for a good image quality.
Now place the prepared
specimen (17) directly

under the objective on
the microscope stage.
The object should be

located directly over
the illumination (10).
In the next step, take a look through the eye-
piece (1) and carefully turn the focus knob (14)
until the image appears clear and sharp.
Now you can select a higher magnification by
slowly removing the Barlow lens (3) from the
eyepiece support (4). When the Barlow lens is
almost completely pulled out, the magnification
can be increased to almost double.
If you would like an even higher level of mag-
nification, insert the 20x eyepiece (2) and turn
the objective nosepiece (6) to a higher setting
(10x or 40x).
Important tip:
The highest magnification is not always the
best for every specimen!
Note:
Each time the magnification changes (eyepiece
or objective change, pulling out the Barlow
lens), the image sharpness must be readjust-
ed with the focus knob (14). When doing this,
make sure to be careful. If you move the mi-
croscope stage too quickly, the objective and
the slide could come into contact and become
damaged!
Which light for which specimen?
With this unit, a reflected light and transmitted
light microscope, you can observe transparent,
semi-transparent as well as non-transparent
objects.
The image of the given object of observation
is "transported" through the light. As a result,
only the correct light will allow you to see some-
thing!
If you are observing non-transparent (opaque)
objects (e.g. small animals, plant components,
stones, coins, etc.) with this microscope, the
light falls on the object that is being observed.
From there, the light is reflected back and pass-
es through the objective and eyepiece (where it
gets magnified) into the eye. This is reflected
light microscopy.
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