General Use; Using The Microscope - Levenhuk Discovery Micro Guia Del Usuario

DISCOVERY MICRO MICROSCOPES

General use

The Discovery Micro microscope is safe for health, life and property of the consumer and the environment when
properly used, and meets the requirements of international standards. The microscope is designed for observing
transparent objects in the transmitted light using the bright field method. May be used by kids over 5 years old.
Caution! Children should use the microscope under an adult's supervision only.
Microscope parts
• Base. It supports the weight of the microscope and houses the illumination source, electronics and control
mechanisms.
• Eyepiece tube. Combines the eyepiece with the objectives system.
• Eyepiece and objective. Consist of lenses that allow magnifying the image. The total magnification is
calculated by multiplying the eyepiece magnification to the objective magnification.
• Revolving nosepiece. This triple nosepiece with 3 pre-installed objectives allows you to change objectives
smoothly and easily.
• Stage. Sturdy and reliable stage with two specimen holders can be used to move your slides while observing
them. The lower illumination light passes through the opening in the middle of the stage.
• Diaphragm disk. Is located below the stage and has apertures of various diameter to adjust the passing light
rays. Rotate the disk to select the desired aperture.
• Focusing knob. A coarse focusing system allows moving the stage up and down adjusting the sharpness of
the specimen image.
• Lower illumination. LED illumination with adjustable brightness can be powered by 2 AA batteries. The lower
illumination is used to observe transparent objects. Using a supplemental light source, such as a table lamp,
directed at the specimen will enable you to observe less transparent objects.

Using the microscope

Getting started
• Unpack the microscope and make sure all parts are available.
• Move the stage to the lowermost position using the focusing knob.
• Make sure the batteries are correctly installed in the battery compartment; insert new batteries if required.
• Slowly adjust the illumination brightness, from dark to light.
Focusing
• Place a specimen on the stage and fix it with the holders.
• Select the 4x objective rotating the revolving nosepiece.
• Move the specimen to place its thickest part exactly under the objective.
• Rotate the focusing knob to slowly raise the stage until the objective is close to the specimen; keep checking
the distance between the objective and the object to avoid their contact. Caution! The objective should not
touch the specimen, otherwise the objective or/and the specimen might be damaged.
• Look through the installed eyepiece and lower the stage slowly rotating the focusing knob until you see the
specimen image.
• Such adjustment protects the frontal lens from contacting the object when you use objectives of other
magnifications; though, slight refocusing might be required.
• If the image is too bright, rotate the diaphragm disk until the passing light ray is reduced to a comfortable
brightness level. If the image is too dark, select a larger aperture to increase the light ray.
Selecting the objective
Start your observations with the lowest magnification objective and select a specimen segment for detailed
research. Then move the specimen to center the selected segment in the field of view, to make sure it keeps
centered when the objective is changed to a more powerful one. Once the segment is selected, you should center its
image in the microscope's field of view as precisely as possible. Otherwise, the desired segment might fail to center
in the field of view of the higher power objective. Now you can switch to a more powerful objective by rotating the
revolving nosepiece. Adjust the image focus if required.
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