Freek Vonk x Bresser Microscope Set

Introduction

This document provides operating instructions for the Freek Vonk x Bresser Microscope Set (Art. No. 9820301). It covers product components, usage, safety precautions, specimen preparation, and maintenance.

Important Information & Safety Warnings

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

❗ ATTENTION: Only suitable for children aged 8 years and older. 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.
• ⚡ Risk of Electric Shock: This device contains electronic components powered by a power source (power supply and/or batteries). Use only as described in the manual to avoid electric shock.
• ?? Risk of Fire/Explosion: Do not expose the device to high temperatures. Use only recommended batteries. Do not short-circuit or throw batteries into fire.
• ? Risk of Chemical Burn: Keep batteries out of reach of children. Ensure correct battery polarity. Leaking or damaged batteries can cause burns. Avoid contact with battery acid; rinse affected areas immediately with water and seek medical attention if contact occurs.
• ?️ Eye Hazard: Never look directly at the sun or near it with this device.
• ? Sharp Edges: The device may involve sharp tools or edges during use. Store safely out of reach of children.

Battery Handling

• Use only recommended batteries.
• Always replace weak or empty batteries with a new, full-capacity set of the same type. Do not mix brands, types, or capacities.
• Remove batteries if the device will not be used for an extended period.
• Never attempt to recharge non-rechargeable batteries, as they may explode.

Disposal

Dispose of packaging materials sorted by type. Contact your local waste disposal service or environmental authority for proper disposal information.

Do not dispose of electronic devices in household garbage! Follow EU Directive 2012/19/EC for separate collection and recycling of electrical and electronic equipment. Dispose of used batteries at designated collection points.

Product Components

The microscope set includes the following main components:

Microscope Parts:

• 1. Eyepiece
• 2. Focus knob
• 3. Objective turret (with multiple objectives)
• 4. Stage (with clips)
• 5. Mirror (for illumination)
• 6a. LED Lamp (Electric light source)
• 6b. Light on/off switch
• 7. Battery compartment
• 8. Rubber base
• 9. Microscope arm
• 10. Microscope body

Included Accessories:

• 11. Prepared slide(s)
• 12. Cover slips & adhesive labels
• 13. Blank slides
• 14. Empty collecting jars
• 15. Magnifying glass
• 16. LR41 batteries (may be included or required)
• 17. Carrying case
• 18. Cylinder (e.g., test tube)
• 19. Dissection needle
• 20. Pipette
• 21. Textile sample (4 different fibres)
• 22. Colour filter wheel

The microscope uses a system of lenses (eyepiece and objective) to magnify specimens. The objective lens magnifies the specimen, and the eyepiece further magnifies this image for viewing.

Assembly and Location

Choose a stable, well-lit location for microscopy. Ensure the room can be darkened for projector observation if needed. Place the microscope on a flat, stable surface to ensure good results.

Operation

Normal Observation

Place the microscope in a bright area. Tilt the arm for a comfortable viewing position. Set the focus knob to its upper limit and the objective turret to the lowest magnification. Look through the eyepiece and adjust the mirror (5) or use the LED lamp (6a) to create a uniformly bright circle of light. Place a prepared slide (11) on the stage (4) under the objective. Adjust the focus knob slowly to sharpen the image. Higher magnifications may require more light.

TIP: Avoid directing the mirror towards direct sunlight, as it can cause glare and obscure the image.

Electric Illumination

For first use, gently pull the battery insulation from the LED lamp. Two LR41 batteries (1.5V) are required and are installed in the mirror/LED lamp unit (7). Remove the unit, loosen the side screw, insert batteries according to +/- indicators, reattach the cover, and secure the screw. Reinsert the unit. Turn on the light using switch (6b). Adjust illumination for optimal brightness.

TIP: Higher magnification requires more light. Start experiments with lower magnifications.

Specimen Preparation

Making Thin Specimen Slices

This should be done with adult supervision. For thin slices, heat wax or paraffin (e.g., from a candle) gently. Dip the object multiple times in the liquid wax, let it solidify, then cut thin slices with a knife or scalpel. Place slices on a glass slide and cover with a cover slip.

Making Your Own Specimens

Place the object on a glass slide (13). Add a drop of distilled water with a pipette. Hold a cover slip (12) vertically at the edge of the water drop, allowing water to spread. Slowly lower the cover slip over the water.

Experiments

Find interesting experiments at: www.bresser.de/downloads

Troubleshooting

Error: No recognizable image

Solution:

• Turn on the light.
• Readjust focus.

Care and Maintenance

Clean lenses (eyepiece and objective) only with the provided lens cloth or a soft, lint-free cloth. Do not press hard to avoid scratches. For heavy dirt, moisten the cloth with cleaning fluid and wipe gently. Protect the microscope from dust and moisture. After use, let it dry in a warm room, then replace dust caps and store in the carrying case.

Warranty & Service

The regular warranty period is 2 years from the date of purchase. For an extended voluntary warranty, registration on the Bresser website is required. Full warranty terms are available at www.bresser.de/warranty_terms.

EC Declaration of Conformity

Bresser GmbH has issued a Declaration of Conformity in accordance with applicable EU guidelines and standards. The full text is available at: www.bresser.de/download/9820301/CE/9820301_CE.pdf