LW Scientific Inverted - Manual (Page 3)

P. 770.270.1394 F. 770.270.2389 865 Marathon Parkway Lawrenceville GA 30046
Operation
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1 Plug the power cord into the appropriate electrical outlet. Turn the light on using the white rocker switch on the front
of the base. The green “On” light will be illuminated. Adjust the light intensity to the appropriate brightness by moving
the slider switch on the side of the microscope base.
Stage - To view a specimen of an active organism and fluid sediment, use the square or round plate to conveniently
place utensil or bottle on the stage.
Focusing - Coarse adjustment: rotate the coarse adjustment knob clockwise to lower the objectives. Lift the objective
by rotating the knob counter-clockwise. After lowering the objective, place the specimen in the center of stage and
look at the specimen using the 10X objective and 10x eyepiece. Focus the specimen with fine adjustment knob.
Attention:
In order to avoid damage to the specimen or an objective, please follow the focusing procedure as below:
View the specimen from the side without looking through the eyepiece. Rotate the coarse adjustment knob
counter-clockwise to raise the objective slowly until the objective is approaching, but not touching, the specimen.
Observe specimen through eyepiece and rotate the fine adjustment knob counter-clockwise until the image is clear.
Trinocular Head - Once you are comfortably seated, look into the oculars and move the eyepiece tubes together or
apart until you see only one complete circle of light. You have now adjusted your interpupillary distance.
Diopter Adjustment - Since you are using a binocular microscope, you need to adjust for the normal difference in
vision between your two eyes. This is a simple but critical adjustment! Set both diopters to “0.” Close your right eye
and look into the left ocular with your left eye. Adjust the fine focus to give you the best image. Then, look at the
ocular tube on the right. You will see that the ocular tube has a built-in adjustment ring. Now, close your left eye and
look with your right eye into the right ocular. Using the diopter adjustment ring on the right ocular tube, adjust the
focus until you see a clear, focused field.
Dust Cover - Cover the microscope with the dust cover when not in use.
Filters - Use the neutral filter to have the entire field illuminated evenly. If the light is too yellow, you may select blue
filter. When using phase contrast, the green filter can lesson the eyestrain when working for long periods of time.
Changing the Bulb - Caution: Unplug the microscope and let it cool (if recently in use) before opening the light
housing of the microscope. When handling a new quartz lamp, be sure not to touch the new lamp with your fingers.
Oil or moisture on the bulb may cause it to explode or shatter as it heats up.
Maintenance and Repairs - To keep your microscope in top condition for years, LW Scientific recommends that you
have the microscope professionally serviced once a year.
Note: If your microscope has been exposed to cold weather, please allow time for all the parts
to come to room temperature before switching on the power. Excess cold can fog the lenses
and may cause the lamp to fail.
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