BRESSER 9820301 Microscope Set Instruction Manual

: June 16, 2024
: BRESSER

Table of Contents

Operating Instructions
All Parts
Troubleshooting
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

**BRESSER 9820301 Microscope Set Instruction Manual

**

Operating Instructions

WARNING! Not for children under three years. Choking hazard – small parts. Contains functional sharp edges and points!

ATTENTION: Only suitable for children of at least 8 years of age. Instructions for parents or other responsible persons are enclosed and must be followed. Keep packaging as it contains important information.

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 — Keep batteries out of the reach of children! 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.
Leaking battery acid can lead to chemical burns. Avoid contact of battery acid with skin, eyes and mucous membranes. In the event of contact, rinse the affected region immediately with a plenty of water and seek medical attention.
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 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.

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 fibres)
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.

The Colour filter wheel (22) below the microscope stage (4) will help you in viewing very bright or clear-sighted preparations. Turn the wheel (22) till the best contrast is achieved.

Electric Illumination

Before first use: Gently pull the battery insulation of the LED lamp to remove it.

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 a 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 a 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 cover slip.

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 on the object using a pipette. Now, place a cover slip (12) vertically at the edge of the drop of water, so that the water runs along the edge of the cover slip. Then, slowly lower the cover slip 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 recognisable 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 leave it in a warm room to dry off. Then install the dust caps and keep it in the case provided.

Warranty & Service
The regular warranty period is 2 years and begins on the day of purchase. To benefit from an extended voluntary warranty period as stated on the gift box, registration on our website is required.

You can consult the full warranty terms as well as information on extending the warranty period and details of our services at www.bresser.de/warranty_terms.

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 2012/19/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 the normal household waste is explicitly forbidden. Please pay attention to dispose of your used batteries as required by law – at a local collection point or in the retail market (a 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.

battery contains cadmium
battery contains mercury
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/9820301/CE/9820301_CE.pdf

SERVICE AND WARRANTY:

www.bresser.de/warranty_terms

MICROSCOPE GUIDE:

www.bresser.de/guide

MICROSCOPE FAQ:

www.bresser.de/faq

MANUAL DOWNLOAD:

www.bresser.de/P9820301

EXPERIMENTS:

www.bresser.de/downloads

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