BRESSER 8851000 Optical Laboratory Microscope Instruction Manual

: June 3, 2024
: BRESSER

BRESSER 8851000 Optical Laboratory Microscope Instruction Manual

BRESSER 8851000 Optical Laboratory Microscope

Warning!
Contains functional sharp edges and points. Small parts, Choking hazard. Not suitable for children under 3 years.

Product Overview

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 (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 there commended batteries. Do not short-circuit the device or batteries, or throw them into an 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 forn protection.
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 itis not to be used for a long period of time, or if the batteries are empty!
Never recharge normal, non-rechargeabl batteries. This could lead to explosion during the charging process.
Rechargeable batteries are only to be charged under adult supervision.
Rechargeable batteries are to be removed from the toy before being charged
The terminals must not be short-circuited.
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 andb all tools and accessories in a location that is out of the reach of children.
Keep instructions and packaging as they contain important information.
The chemicals and liquids provided should be kept out of reach of children. Do not drink the chemicals! Hands should be washed thoroughly under running water after use. In case of accidental contact with the eyes or mouth rinse with water. Seek medical treatment for ailments arising from contact with the chemical substances and take the chemicals with you to the doctor.

Check the Power supply for damage to the cord, plug, enclosure or other parts on a regular basis before use. Do not use until the damage has been repaired. The toy is not intended for children under three years. The toy must only be used with the recommended power supply. The power supply is not a toy. The toy is not to be connected to more than the recommended number of power supplies.

TIPS on cleaning

Remove the device from it’s energy source before cleaning (remove plug from socket / remove batteries). Clean the exterior of device with a dry cloth. Do not use cleaning fluids so as to avoid causing damage to electronic components.

Clean the exterior of device with a dry cloth. Do not use cleaning fluids so as to avoid causing damage to electronic components.

Toys liable to be cleaned with liquid are to be dis – connected from the power supply before cleaning Clean the lens (objective and eyepiece) only with the cloth supplied or some other soft lint-free cloth (e.g. microfibre). Do not use excessive pres – sure – this may scratch the lens.

Clean the lens (objective and eyepiece) only with the cloth supplied or some other soft lint-free cloth (e.g. micro-fibre). Do not use excessive pressure – this may scratch the lens.

DISPOSAL
Dispose of the packaging material/s as legally required. Consult the local authority on the matter if necessary.

Do not dispose of electrical equipment in your ordinary refuse. The European guide – line 2002/96/EU on Electronic and Electrical Equipment Waste and relevant laws applying to it require such used equipment to be separately collected and recycled in an environment-friendly manner.

Empty batteries and accumulators must be disposed of separately. Information on disposing of allsuch equipment made after 01 June 2006 can be obtained from your local authority

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/8851000/CE/8851000_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/8851000/UKCA/8851000_UKCA.pdf

Bresser UK Ltd. uite 3G, Eden House, Enterprise Way, Edenbridge, Kent TN8 6Hf, Great Britain

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.

All Parts

Eyepiece
Focus knob
Objective turret
Stage
Mirror
Electronic light source
Base with battery compartment
Rubber base
Microscope arm
Microscope “Biotar”
Prepared Slides
Cover Plates
Blank Slides
Petri dish
Micro projector
Replacement bulb
3x magnifying glass
Settling cylinder
Reservoir
Shrimp farming accessories
Microscope instruments
Micro-slicer
Hatchery

Your Transmitted-light Microscope

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 n 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 packaging and tilt the microscope arm (9)b 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.

How do I make my own specimens?

Take the object that you want to observe and place it on a glass slide. Then, add a few drops of distilled water on the object using a pipette. Now, place a cover slip 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.

Note:
The included glue “gum media” (20b) is used to make permanent prepared specimens. Use this in place of the distilled water. If you want to keep the object in place on the slide permanently, use the gum media.

Electric Illumination

To use the electric light source (6), you need two AA batteries (1.5 V), which are installed in the base of the microscope (7). Remove the rubber base (8) on the microscope and insert the batteries according to the displayed +/- information. Reattach the rubber base to the microscope.

You can turn on the light by rotating it in the direction of the stage (4). 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. One replacement bulb (16) is included. 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.

Projector

The included micro-projector (15) is ideal for looking at a specimen with multiple people at the same time. To use the projector, you absolutely must use the electric illuminator. This way, you can show your results to your friends and family

Unscrew the eyepiece (1) from the microscope and place the micro-projector on the open eyepiece support so that the matt screen is pointing behind you. Adjust the light so that the matt screen is lit up brightly.
You can adjust the focus of the prepared slide image using the focus knob (2). Make sure to swivel the microscope arm (9) back into an upright position so that you can comfortably observe the specimen.

In a dark room, it is also possible to project the microscope picture on a white wall. To do this, remove the matt screen. Swivel the tripod so that the upper edge of the projector is horizontal. Keep in mind that the image brightness is reduced and the picture will be darker if the projector is far away from the wall.

Experiments

Now that you’re familiar with your microscope’s functions and how to prepare slides, you can complete the following experiments and observe the results under your microscope

Newspaper print

Objects:

A small piece of paper from a newspaper with parts of a picture and some letters
A similar piece of paper from an illustrated magazine:
Use your microscope at the lowest magnification and make a slide preparation from each object. Place the slide with the newspaper on the microscope table and observe the slide. The letters in the newspaper appear broken because the newspaper is printed on raw, inferior paper. Now observe the slide with the magazine preparation. Letters of the magazine appear smoother and more complete. The picture from the newspaper consists of many small points, which appear somewhat dirty. The pixels (raster points) of the magazine image appear sharper.

Textile fibres

Objects and accessories:

Threads of different textiles: Cotton, linen, wool, silk, Celanese, nylon and any others you can find.
Two needles:
Put each thread on a glass slide and fray each with the help of the two needles. Put a drop of water over each thread with the pipette and cover each with a cover glass. Adjust the microscope to a low magnification. Cotton fibres are of plant origin and look, under the microscope, like a flat, twisted band. The fibres are thicker and rounder at the edges than in the centre. Cotton fibres consist primarily of long, collapsed tubes. Linen fibres are also of plant origin; they are round and run in straight lines. The fibres shine like silk and exhibit numerous swellings along the shaft of the fibre. Silk is of animal origin and consists of solid fibres of smaller diameter than the hollow vegetable fibres. Each silk fibre is smooth and even and has the appearance of a small glass rod. Wool fibres are also of animal origin; the surface consists of overlapping scales, which appear broken and wavy. If possible, compare wool fibres from different weaving mills, and note the differences in the appearance of the fibres. Experts can determine the country of origin of wool based on its appearance under a microscope. Celanese is artificially manufactured by a long chemical process. All Celanese fibres show hard, dark lines on a smooth, shining surface. The fibres crinkle in the same way after drying. Observe the similarities and differences between the different fibres

Saltwater brine shrimps

Accessories:

Brine shrimp eggs (20d)
Sea salt (20c)
Hatchery (23)
Yeast (20a)

CAREFUL! These eggs are not fit for human consumption.

Winter eggs of Artemia salina

Artemia salina are species of brine shrimp typically found in salt lakes — bodies of water with a higher salinity than even the ocean. During a drought, a salt lake can become a hostile habitat for organisms, and entire populations of Artemia salina sometimes die off. During drought conditions, to ensure that the species will repopulate the salt lake when the drought ends, Artemia salina lay thick-shelled eggs called winter eggs that can survive for up to ten years in a dormant state.Winter eggs can withstand heat, cold and chemicals. These eggs hatch when favourable conditions return to their ambient environment. The eggs provided (20d) are of this type.

Hatching winter eggs

To hatch the brine shrimps, create a solution with an appropriate salinity and temperature. First, fill two containers with a half litre of freshwater each, and let them both stand for about thirty hours. Next, pour half of the provided salt (20c) into one container and stir the solution until the salt dissolves. Pour some of this solution into the hatchery (21). Place a few eggs close to the lid. Position the hatchery somewhere with plenty of light but not in direct sunlight. The ambient tem perature should ideally hover around 25 °C. As water in the hatchery evaporates, gradually add freshwater from the second container. After two to three days, the eggs will hatch brine shrimp larvae, called nauplii.

Observing Artemia salina under a microscope

Using the pipette, move some larvae from the container to a microscope slide for examination. When viewing the larvae, you’ll notice that they swim through the solution using hairlike limbs! Each day, examine a few more. You can even view the entire hatchery under the microscope if you remove its lid. The larvae will mature in six to ten weeks, depending on the temperature of the water. Soon, you will have an entire generation of saltwater brine shrimps that reproduce frequently!

Feeding your Artemia salina

Feed your brine shrimps often to keep them alive. The best food is dry powdered yeast (20a). Give them some every other day. Be careful not to overfeed them, as doing so can cause the water to stagnate and poison the brine shrimps. If the water does begin to stagnate (you’ll see it darkening), transfer the brine shrimps to the fresh saline solution you have prepared earlier.

Support

MANUAL DOWNLOAD

SERVICE AND WARRANTY

MICROSCOPE GUIDE

MICROSCOPE FAQ

EXPERIMENTS

Contact

Bresser GmbH
Gutenbergstraße 2
46414 Rhede · German

Bresser UK Ltd.
Suite 3G, Eden House
Enterprise Way, Edenbridge,
Kent TN8 6Hf, Great Britain

http://www.bresser.de/ **
@BresserEurope

**

Documents / Resources

| BRESSER 8851000 Optical Laboratory Microscope [pdf] Instruction Manual
8851000, Optical Laboratory Microscope, Laboratory Microscope, Optical Microscope, Microscope, 8851000
---|---