NATIONAL GEOGRAPHIC 9118002 300X-1200X Microscope Instruction Manual
- June 3, 2024
- NATIONAL GEOGRAPHIC
Table of Contents
NATIONAL GEOGRAPHIC 9118002 300X-1200X Microscope
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.
- 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.
Parts overview
- Eyepiece
- Focus knob
- Objective turret
- Stage
- Mirror
- Electronic light source/battery compartment
- Base
- Rubber base
- Microscope arm
- Prepared slides
- Cover plates
- Reservoir
- CR2032 battery
- Microscope instruments
What is a microscope?
A microscope contains two lens systems: the eyepiece and the objective. We’re
presenting these systems as one lens each so that the concept is 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) produces
a magnified image of the prepared specimen (10). The picture, which you can’t
see, is magnified once more by the second lens (eyepiece, 1), which you can
see as the ‘microscope picture’.
Assembly and location
Before you start, choose an ideal location for using your microscope. It’s
important that you choose a spot with enough light for normal observation.
Furthermore, it is recommended that you place the microscope on a stable
surface because a shaky surface will not lead to satisfactory results.
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. Turn the focus knob (2) to the upper stop, and set the objective turret
(3) to the lowest magnification. Now, take a look through the eyepiece and
adjust the mirror (5) so that you see a uniform bright circle of light. Or,
you can use the electronic light source (6). You’ll find further tips about
the light source in the next section. Now, place a prepared slide (10) under
the clips on stage (4), directly under the objective. When you take a look
through the eyepiece, you can see the magnified specimen. At this point, you
still might see a slightly fuzzy picture. Adjust the image sharpness by slowly
turning the focus knob (2). You can now select a higher magnification by
turning the objective turret and selecting a different objective. When you do
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.
Observation (electronic light source)
NOTE! Before initial operation, the foil used for protecting the battery
from discharging must be pulled out of the battery compartment. Locate the
mirror/light on the base of the microscope. Flip the mirror/light with the
light facing up and press the button to power on the light. This microscope is
equipped with an incandescent light that illuminates the specimen from below.
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.
Battery change
- Remove the safety screw from the cover.
- Remove the battery cover.
- Slide out the coin battery holder.
- Install the CR2032 coin battery with the positive (+) polarity facing down and the negative (-) polarity facing up on the holder.
- Replace the battery cover.
- Screw in the safety screw back to the cover
Notes on Cleaning
- Before cleaning the device, disconnect it from the power supply by removing the plug or batteries.
- Only use a dry cloth to clean the exterior of the device. To avoid damaging the electronics, do not use any cleaning fluid.
- Protect the device from dust and moisture.
- The batteries should be removed from the unit if it has not been used for a long time.
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/9118002/CE/9118002_CE.pdf
UKCA Declaration of Conformity
Bresser GmbH has issued a „Declaration of Conformity“ in accordance with
applicable guidelines and corresponding standards. The full text of the UKCA
declaration of conformity is available at the following internet address:
www.bresser.de/download/9118002/UKCA/9118002_UKCA.pdf
Disposal
Dispose of the packaging materials properly, according to their types, such as
paper or cardboard. 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 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 6 January 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 make sure to dispose 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.
- battery contains cadmium
- battery contains mercury
- battery contains lead
Warranty
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.