General Information; Using The Microscope - Levenhuk ST Serie Guia Del Usuario

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Levenhuk ST Series Stereo Microscopes
Please read this manual carefully before using your microscope for the first time.

General Information

Levenhuk 1ST, Levenhuk 2ST, Levenhuk 3ST and Levenhuk 4ST microscopes were designed to be used during assembly of intricate
equipment, including electronics; for school experiments and scientific research. All models may be found in schools and
research institutes, at home and in manufacturing plants.

Using the microscope

Illumination (Levenhuk 1ST, Levenhuk 3ST, Levenhuk 4ST)
Plug your microscope into a power source or insert batteries, 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.
Preparations
Place a specimen in the center of a blank slide, put the slide on the stage and lock it in place with stage clips.
Eyecups
For additional comfort during observations you can use rubber eyecups on both eyepieces.
Focusing, diopter adjustment, interpupillary distance
Place a slide on the stage and lock it in place with stage clips. Loosen the locking knob on the microscope pole and slide the
head up or down into a desired position and retighten the locking knob. Look through the right eyepiece and turn the objective
lens handle until you see the specimen in your field of view. Afterwards, turn the focus knob until the image is sharp and clear.
Look through the left eyepiece and rotate the diopter adjustment ring until the image is sharp and clear. Do not adjust focus
during diopter adjustment! Upon completing this process, look through both eyepieces, hold them with your hands and bring
them closer or move them apart until a double image turns into a single image.
Changing objective lenses
Levenhuk 3ST and Levenhuk 4ST has a revolving nosepiece with two objective lenses. To switch between them, you have to
rotate the nosepiece.
Changing lamps
CAUTION! Before changing a lamp or a fuse make sure the microscope is unplugged from a power source. Also, wait until the
lamp cools down.
Changing the upper illumination lamp
Loosen the locking screw on the upper illumination housing and remove the light socket from within. Replace the old lamp with
a new one and put the light socket back. Retighten the locking screw.
Changing the lower illumination lamp
Loosen the locking screw on the stage and remove the glass. Remove the old lamp from the light socket and replace it with a
new one. Put the glass back in its place and retighten the locking screw.
Changing the fuse replacement
The fuse box is located on the bottom of the microscope base. Remove the cover and replace the old fuse with a new fuse.
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