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Les langues disponibles
Observation
MEDIO binocular microscopes
Ref :
571 225 / 571 258 / 571 260
ENGLISH
3 Use and adjustment
- When moving the microscope, pick it up only by the inclined arm of the body
and place your other hand under the base.
- Use the switch to turn the microscope on, turn the dimmer located on the
base to obtain the desired light intensity.
- Place the prepared slide on the stage.
- The 360 º rotatable head and the 45° inclined tubes are ergonomically
designed for prolonged use.
- The parafocal objectives make it easy to focus when changing the
magnification; the 40x, 60x and 100x (immersion) objectives are retractable
to avoid damaged prepared slide in case of accidental contact with it.
- The microscope is focused vertically by displacing the stage with a coarse
adjustment knob for rapid movements and a coaxial micrometric screw for
fine adjustments.
- The height of the stage can be limited by the blocking lever located at the
base of the coarse adjustment and on the left of the stand. In order to adjust
this stop :
switch to the 100x objective, then slowly raise the stage while
observing it from the side until the plate almost touch (about 0.2 mm)
the objective,
bring down the lever.
- Under the stage there is a adjustable light condenser by the knurled knob on
the left, as well as an iris diaphragm and a filter holder for filters (blue or
green) to observe highly transparent prepared slides.
- Adjust the brightness by adjusting the condenser, then close the diaphragm
to increase the contrast and the field depth. Do not close the diaphragm too
much in order to not change the resolution.
4 Maintenance
- Protection from dust: After use, place the cover over the apparatus. If there
are dust deposits on the lenses, blow them away with a syringe or dust
remover (item no. 574 198) or use a martin hair brush ; the lenses are fragile
and can be scratched by dust.
- Fingerprints: Do not touch the lenses. If, however, they do have fingerprints
on them, remove the fingerprints with a soft cloth or lens paper (item no. 803
092).
- Humidity: Humidity, especially in combination with temperature, is
particularly harmful for assembled optics. It is suitable to store the
microscopes in a dry place, and under especially exposed climate
conditions. The microscopes should be stored in their polystyrene boxes
with a dessication bag.
- Disassembly: A microscope is a finely-tooled, precision instrument. If it is
necessary to take it apart (for maintenance), the instrument should be
returned to JEULIN or a qualified repair shop. The base plate that seals the
microscope may only be opened by an electrician because the body must
remain protected according to electrical safety standards. Do not take the
microscope apart unless it is unplugged.
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