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BRESSER Analyth STR 10x–40x Stereo Microscope User Manual
Comprehensive user manual for the BRESSER Analyth STR stereo microscope, covering setup, illumination, observation, dioptre adjustment, and maintenance.
Table of contents
Product Overview
The BRESSER Analyth STR is a high-quality stereo microscope designed for detailed observation. It features a binocular head, adjustable magnification, and versatile illumination options, making it suitable for various scientific and hobbyist applications.
Illumination Options
The microscope offers three distinct lighting modes: incident light (from above), transmitted light (from below), or both simultaneously. Brightness for both incident and transmitted light can be adjusted independently using the control knobs on the base. The device can be powered via the included power supply or by AA batteries, allowing for portable use.
Setup and Observation
Place the microscope on a stable, level surface. Secure your specimen on the stage using the provided object clamps. Magnification can be adjusted by rotating the objective holder (1x, 2x, or 4x). Always begin observation at the lowest magnification (1x) before increasing it.
Focusing and Dioptre Adjustment
To ensure a clear image, first set the dioptre scale on the left eyepiece to the middle position. Close your left eye and use the focus wheel to sharpen the image for your right eye. Then, close your right eye and adjust the left eyepiece using the dioptre ring until the image is sharp for your left eye. The binocular head can also be adjusted to match your specific interpupillary distance.
Maintenance
Keep the microscope clean and free of dust and moisture. Use a soft brush to remove dust and a lint-free cloth with a small amount of alcohol to clean optical surfaces. Always cover the microscope with the provided dust cover when not in use. The LED illumination has an estimated lifespan of approximately 20,000 hours.
Technical Specifications
- Eyepieces: 2x 10x
- Objectives: 1x, 2x, 4x (Stereo)
- Total Magnification: 10x, 20x, 40x
- Illumination: LED
Manufacturer information
Bresser GmbH
Practical help
Common problems
Microscope head slides down due to its own weight.
Adjust the friction of the focusing drive by turning the two focusing wheels in opposite directions.
LED illumination failure.
The LED has a lifespan of approx. 20,000 hours. If it fails, contact the Bresser service center.
Before use
- Ensure the microscope is placed on a stable, level surface.
- Check that the power supply is connected or that fresh AA batteries are inserted with correct polarity.
- Verify that the dioptre scale is set to the middle position before starting.
- Ensure the binocular head is adjusted to your eye distance.
- Clean optical surfaces with a soft, lint-free cloth if necessary.
Specs in practice
- Total Magnification
- Calculated by multiplying the objective magnification (1x, 2x, or 4x) by the eyepiece magnification (10x).
- Incident Light
- Illumination from above, ideal for opaque objects.
- Transmitted Light
- Illumination from below, ideal for translucent objects.
Images and diagrams
- Fig. 1: Overview of microscope components including eyepieces, focus wheel, illumination controls, and stage.
- Fig. 2: Battery compartment location on the underside of the base.
- Fig. 3: Power supply connection port.
- Fig. 4: Included accessories: dust cover, power supply, object plate, and rubber eyecups.
Model compatibility
- Rechargeable batteries inserted into the device will not be charged by the microscope's power supply.
- The microscope can be operated simultaneously with the power supply and batteries.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.