Specifications; Additional Accessories; Using The Microscope - Levenhuk 2ST Bedienungsanleitung

Levenhuk 2ST, Levenhuk 3ST stereo microscopes
Please read this manual carefully before using your microscope for the first
time.
Levenhuk 2ST and Levenhuk 3ST microscopes were designed to be used during assembly of
intricate equipment, including electronics; for school experiments and scientific research. Both
models may be found in schools and research institutes, at home and in manufacturing plants.

Specifications

Vertical binocular head (Levenhuk 2ST) or a binocular head inclined at a 45° angle (Levenhuk 3ST)
Diopter adjustment range: +/-5°
Interpupillary distance adjustment range: 54–76 mm
Magnification: 20x (Levenhuk 2ST), 20–40x (Levenhuk 3ST)
Objective lenses: 2x (Levenhuk 2ST), 2x, 4x (Levenhuk 3ST)
Power source: 220V/50Hz or 110V/60Hz (optional)
Illumination sources: Upper and lower illumination sources, 12V/10W halogen lamps (for
observations in reflected or transmitted light)

Additional accessories

Dark field condenser, tweezers (may be used for jewelry).
Fluorescent lamp (may be held in place with three locking screws on the side of the nosepiece). A
regular lamp may be used as an alternative, for softer lighting and more comfortable observations

Using the microscope

Environment
These microscopes perform best in dry and clean rooms – even a smallest speck of dust on the
optics may reduce the quality of your views – with temperatures ranging from -5 to +40°C
(23–104°F).
Illumination
Plug your microscope into a power source, turn it on and choose the required illumination source.
If your microscope is fitted with brightness control, you can also choose the brightness level of
illumination.
Stage inset glass
Frosted glass stage inset may be used for observations of transparent specimens or thin slices of
objects. Place it on the stage and secure it in place with the locking screw. Lower illumination
source should be used during observations with this glass stage inset.
The kit of your new microscope may also include a black and white glass stage inset. Normally,
you would want to use the white side; however, if a specimen is very bright, or colored white, you
should use the black side for additional contrast. Upper illumination source should be used during
observations with this glass stage inset. Before installing the black and white glass make sure to
remove the frosted glass from the stage.
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