• 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.
Specifications
Type
Magnification
Head
Optics material
Body material
Eyepiece tube diameter
Eyepieces
Revolving nosepiece
Objectives
Stage
Stage moving range
Focusing
Diaphragm disk
Illumination
Power source
Levenhuk K50 experiment kit
Levenhuk reserves the right to modify or discontinue any product without prior notice.
Notes:
1. The Levenhuk K50 experiment kit is supplied without an individual plastic case.
2. Batteries might be pre-installed in the battery compartment by the manufacturer.
Care and maintenance
• Never, under any circumstances, look directly at the Sun, another bright source of light or at a laser through
this device, as this may cause PERMANENT RETINAL DAMAGE and may lead to BLINDNESS.
• Take necessary precautions when using the device with children or others who have not read or who do not fully
understand these instructions.
• After unpacking your microscope and before using it for the first time check for integrity and durability of every
component and connection.
• Do not try to disassemble the device on your own for any reason. For repairs and cleaning of any kind, please
contact your local specialized service center.
• Protect the device from sudden impact and excessive mechanical force. Do not apply excessive pressure when
adjusting focus. Do not overtighten the locking screws.
• Do not touch the optical surfaces with your fingers. To clean the device exterior, use only special cleaning wipes and
special optics cleaning tools from Levenhuk. Do not use any corrosive or acetone-based fluids to clean the optics.
• Abrasive particles, such as sand, should not be wiped off lenses, but instead blown off or brushed away with a soft
brush.
• Do not use the device for lengthy periods of time, or leave it unattended in direct sunlight. Keep the device away
from water and high humidity.
• Be careful during your observations, always replace the dust cover after you are finished with observations to
protect the device from dust and stains.
• If you are not using your microscope for extended periods of time, store the objective lenses and eyepieces
separately from the microscope.
• Store the device in a dry, cool place away from hazardous acids and other chemicals, away from heaters, open fire
and other sources of high temperatures.
• When using the microscope, try not to use it near flammable materials or substances (benzene, paper, cardboard,
plastic, etc.), as the base may heat up during use, and might become a fire hazard.
biological
40–640x
monocular, inclined 45°
optical plastic
plastic
30mm
WF10x–WF16x
3 objectives
4х, 10х, 40х
diameter 82mm, with specimen holders
0–15mm, vertical
coarse
yes
lower LED illumination with adjustable brightness
2*АА batteries
yes
4