BRESSER 9203300 University Of Oxford Childrens Microscope Set Instruction Manual
- June 6, 2024
- BRESSER
Table of Contents
MIKROSKOP-SET, 48-TEILIG
MICROSCOPE SET, 48 PCS.
Art.No. 9203300
GENERAL WARNINGS
- Choking hazard — This product contains small parts that could be swallowed by children. This poses a choking hazard.
- Risk of electric shock — This device contains electronic components that operate via a power source (power supply and/or batteries). Only use the device as described in the manual, otherwise, you run the risk of an electric shock.
- Risk of fire/explosion — Do not expose the device to high temperatures. Use only the recommended batteries. Do not short-circuit the device or batteries, or throw them into a fire. Excessive heat or improper handling could trigger a short circuit, a fire, or an explosion.
- Risk of chemical burn — Make sure you insert the batteries correctly. Empty or damaged batteries could cause burns if they come into contact with the skin. If necessary, wear adequate gloves for protection.
- Do not disassemble the device. In the event of a defect, please contact your dealer. The dealer will contact the Service Centre and can send the device in to be repaired, if necessary.
- Use only the recommended batteries. Always replace weak or empty batteries with a new, complete set of batteries at full capacity. Do not use batteries from different brands or with different capacities. Remove the batteries from the unit if it has not been used for a long time.
- Never recharge normal, non-rechargeable batteries. This could lead to an explosion during the charging process.
- Tools with sharp edges are often used when working with this device. Because there is a risk of injury from such tools, store this device and all tools and accessories in a location that is out of the reach of children.
- Keep instructions and packaging as they contain important information.
DISPOSAL
****Dispose of the packaging materials properly, according to their type
(paper, cardboard, etc). Contact your local waste disposal service or
environmental authority for information on the proper disposal.
**** Do not dispose of electronic devices in the household garbage!
As per the Directive 2002/96/EC of the European Parliament on waste electrical
and electronic equipment and its adaptation into German law, used electronic
devices must be collected separately and recycled in an environmentally
friendly manner.
Empty old batteries must be disposed of at battery collection points by the
consumer. You can find out more information about the disposal of devices or
batteries produced after 01.06.2006 from your local waste disposal service or
environmental authority.
In accordance with the regulations concerning batteries and rechargeable
batteries, disposing of them in normal household waste is explicitly
forbidden. Please pay attention to disposal of your used batteries as required
by law – at a local collection point or in the retail market (disposal in
domestic waste violates the Battery Directive).
Batteries that contain toxins are marked with a sign and a chemical symbol.
„Cd“ = cadmium, „Hg“ = mercury, „Pb“ = lead.
1 battery contains cadmium
2 battery contains mercury
3 battery contains lead
EC Declaration of Conformity
Bresser GmbH has issued a “Declaration of Conformity” in accordance with
applicable guidelines and corresponding standards. The full text of the EU
declaration of conformity is available at the following internet address:
www.bresser.de/download/9203300/CE/9203300_CE.pdf
UK Declaration of Conformity
Bresser GmbH has issued a “Declaration of Conformity” in accordance with
applicable guidelines and corresponding standards. The full text of the UK
declaration of conformity is available at the following internet address:
ww.bresser.de/download/9203300/UKCA/9203300_UKCA.pdf
All Parts
-
Eyepiece
-
Focus knob
-
Objective turret
-
Stage
-
Mirror
6a. LED lamp (Electronic light source)
6b. Light on/off switch -
Battery compartment
-
Rubber base
-
Microscope arm
-
Microscope
-
Prepared slide
-
Cover plates and adhesive labels
-
Blank Slides
-
Empty bottles
-
Magnifying glass
-
LR41 batteries
-
Carrying case
-
Cylinder
-
Stirring rod
-
Pipette
-
Textile sample (4 different fibers)
-
Colour filter wheel
What is a Microscope?
The microscope is made of two lens systems: the eyepiece and the objective.
We’re presenting these systems as one lens each so that it‘s easier to
understand. In reality, however, the eyepiece (1) and the objective in the
turret (3) are made up of multiple lenses.
The lower lens (objective) magnifies the prepared specimen (e.g. 11), which
leads to a magnified image of the specimen. The picture, which you can’t see,
is magnified once more by the second lens (eyepiece, 1). Then, you can see the
“microscope picture.”
Assembly and Location
Before you start, choose an ideal location for using your microscope. On the
one hand, it‘s important there is enough light (normal observation). On the
other hand, it’s important that you can quickly make the room dark when you
want to (projector observation). Furthermore, I recommend that you place the
microscope on a stable surface since you won’t be able to get any satisfactory
results on a shaky surface.
Normal Observation
For normal observation, place the microscope in a bright location (near a
window or desk lamp, for example). Remove the microscope from the package and
tilt the microscope arm (9) so that it’s in a comfortable viewing position for
you.
The focus knob (2) is turned to the upper stop and the objective turret (3) is
set to the lowest magnification.
Now, take a look through the eyepiece and adjust the mirror (5) so that you
get a uniformly bright circle of light. Or, you can use the lamp. You’ll find
further tips about the lamp in the next chapter. Now, place a prepared slide
(e.g. 11) under the clips on the stage (4), directly under the objective. When
you take a look through the eyepiece, you can see the magnified specimen. At
this point, it might still be a slightly fuzzy picture. The sharpness is
adjusted by slowly turning the focus knob (2). You can now select a higher
magnification by turning the objective turret and selecting a different
objective.
In doing so, note that the sharpness of the picture must be adjusted again for
the higher magnification. Also, the higher the magnification, the more light
you will need for good illumination of the picture.
TIP: Avoid positioning the mirror so that it is exposed to direct
sunlight since it can cause a glare, which won’t allow you to get a clear
picture.
Electric Illumination
To use the LED lamp (6a), you need two LR41 batteries (1.5 V), which are
installed in the Mirror/led lamp of the microscope (7). Remove the Mirror/LED
lamp from the arc holder. Loosen the screw on the side with a small Phillips
screwdriver and insert the batteries according to the displayed +/-
information. Reattach the mirror cover and tighten the screw. Replace the
Mirror/LED lamp in the holder. You can turn on the light with the light on/off
switch (6b). Take a look through the eyepiece and adjust the light so that you
get optimal picture brightness. Now you can observe in the same way as
described in point 1.3.
The bulbs for the electric light can be replaced. When you use another bulb,
make sure to pay attention to the maximum wattage, which is displayed on the
lamp body.
TIP: The higher the magnification used, the more light is required for
good illumination of the picture. Therefore, always start your experiments
with one of the lower magnifications.
How do I make thin specimen slices?
Only do this with the supervision of your parents or another adult.
In order to get the best results, you will need some wax or paraffin. It is
best if you use a candle. Place the wax in a pot and heat it carefully over
low heat. Now, dip the object in the liquid wax a few times. Then, let the wax
get hard. Using a knife/scalpel, cut the smallest slices from the object that
is covered with wax. These slices are to be laid on a slide and covered with
a coverslip.
How do I make my own specimens?
Take the object that you want to observe and place it on a glass slide (13).
Then, add a few drops of distilled water to the object using a pipette. Now,
place a coverslip (12) vertically at the edge of the drop of water, so that
the water runs along the edge of the coverslip. Then, slowly lower the
coverslip over the water drops.
Experiments
Use the following web link to find interesting experiments you can try out.
http://www.bresser.de/downloads
Troubleshooting
| Error | Solution |
|---|---|
| No recognizable image | • Turn on light |
• Readjust focus
Make sure your microscope has a long service life.
Clean the lens (objective and eyepiece) only with the cloth supplied or some
other soft lintfree cloth (e.g.microfibre). Do not press hard as this might
scratch the lens.
Ask your parents to help if your microscope is really very dirty. The cleaning
cloth should be moistened with cleaning fluid and the lens wiped clean using
little pressure.
Make sure your microscope is always protected against dust and dirt. After use
leaves it in a warm room to dry off. Then install the dust caps and keep them
in the case provided.
Warranty & Service
The regular guarantee period is 5 years and begins on the day of purchase. You
can consult the full guarantee terms and details of our services at
www.bresser.de/warranty_terms.
MANUAL DOWNLOAD:
SERVICE AND WARRANTY:
MICROSCOPE GUIDE:
MICROSCOPE FAQ:
EXPERIMENTS:
WARNINGS! Not suitable for children under three years. CHOKING HAZARD- Small parts. PUNCTURING HAZARD – functional sharp points! LACERATING HAZARD – functional sharp edges! Keep instructions and packaging as they contain important information.
Made under license
TM & © Oxford Limited
Bresser GmbH
Gutenbergstr. 2
46414 Rhede
Germany
www.bresser.de
info@bresser.de
Bresser UK Ltd.
Suite 3G, Eden House
Enterprise Way, Edenbridge,
Kent TN8 6Hf, Great Britain
Manual_9203300_Microscope_gb-de-fr-nl-it-es-pt_OXFORD_v072021a
Errors and technical changes reserved.