Levenhuk MED 10, MED 25 User Manual

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Levenhuk MED 10 Microscopes

User Manual

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10 10

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Fig. 1a. Levenhuk MED 10M Fig. 1b. Levenhuk MED 10B Fig. 1с. Levenhuk MED 10T,

MED D10T, MED D10T LCD

1 Eyepiece 10 Coarse focusing knob

2 Monocular/binocular/trinocular eyepiece head 11 Fine focusing knob

3 Arm 12 Condenser with lter holder

4 Revolving nosepiece 13 Illumination

5 Objective 14 Stage moving knob (right/left and back/forth)

6 Stage 15 Illumination on/o button (not shown)

7 Mechanical scale 16 Diopter adjustment ring

(binocular and trinocular models only)

8 Brightness adjustment knob (not shown) 17 Monocular/binocular/trinocular head locking screw

9 Aperture diaphragm adjustment rod 18 Third eyepiece tube (trinocular models only)

Fig. 2a. Levenhuk MED 10M

1 Digital camera

2 USB cable

3 Installation CD

Fig. 2b. Levenhuk MED D10T LCD

1 Digital camera with LCD screen

2 AC adapter

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General Information

Read the user manual carefully before you start working with a microscope. Levenhuk MED Series biological microscopes are safe for health, life and property of the consumer and the environment when properly used, and meets the requirements of international standards. These microscopes are designed for observing transparent objects in the transmitted light using the

bright eld method. They perform well in clinical research and tests; teaching demonstrations; bacterioscopy and cytology in medical and health establishments, laboratories, universities; and may be used for scientic research in agriculture and

microbiology.

Microscope assembly

• Unpack the microscope carefully and place it on a at surface.

• Remove the plastic bags and dustproof cover of the eyepiece head.

• Install the monocular, binocular or trinocular head and tighten the locking screw.

• Inspect all the items included in the kit and dene their purpose.

• Connect the power cord to the microscope and plug it in.

Use

Please refer to the g. 1а (monocular model), g. 1b (binocular model) and g. 1c (trinocular model).

• Turn on the power and the illumination will turn on. Set the brightness at approximately 70%. Place the specimen on the

stage. Make sure the clips hold the specimen rmly in place.

• Iris diaphragm should be adjusted in accordance with numerical aperture of a lens. The best practice is to make the iris diaphragm slightly smaller than the aperture of the selected lens. Open or close the iris diaphragm using the adjustment screws. If the adjustment screw is turned to the right, the iris diaphragm is fully open. Note: the diaphragm is not intended for adjusting the brightness of the illumination. To adjust the brightness, use the brightness adjustment knob.

• Slide the lter holder, place the lter in it and then return the holder to its initial position.

• To change the objective magnication, turn the revolving nosepiece until it clicks.

• Make sure that the lens does not touch the sample when adjusting the focus: rotate the coarse focus knob until the specimen is about 3.175mm (1/8") away from the lens.

• Looking into the eyepiece, slowly turn the coarse focusing knob until you can see the image of the observed specimen. Turn

the ne focusing knob to make the image clear. The ne focusing mechanism allows you to focus on the observed specimen while using high magnications.

• When you use an oil immersion objective, the space between the specimen and the lens should be lled with immersion oil. Raise the condenser to the upper position and put a drop of oil on the lens and on the cover glass of the specimen. Move the

revolving nosepiece back and forth to get rid of air bubbles in the oil. Then, x the objective lens in its working position. Make sure that oil lls the entire space between the objective lens and the specimen. After use, wipe the lens dry.

• To place the specimen in the eld of view, move the stage horizontally back and forth or left and right using the stage moving knob.

• Look through the right eyepiece with your right eye and adjust the image sharpness with the coarse and ne focusing knobs. Binocular and trinocular models: Then, look through the left eyepiece with your left eye and rotate the diopter adjustment

ring to equalize the dierence between your left and right eyes vision. Remember the setting for future use. Adjust the

distance between the eyepiece tubes of the binocular head so that the image merges into a single circle.

• Trinocular models: you can install the digital camera to the third eyepiece tube.

Fuse replacement

Unplug the microscope from a power source. Open the fuse holder located on the back of the microscope body with a at head

screwdriver. Remove the old fuse and install a new one. Only use the appropriate types of fuses. Close the fuse holder.

Digital camera

Levenhuk MED D10T comes with a digital camera (g. 2a), Levenhuk MED D10T LCD comes with a digital camera with an LCD screen (g. 2b). A digital camera is installed to the third eyepiece tube and enables observing specimens on the screen in

exquisite detail and true color, taking photos and videos, and saving the images for future reference.

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Specications

Product ID 73983 73984 73985 73986 73987

Model MED 10M MED 10B MED 10T MED D10T MED D10T LCD

Type biological/optical biological/optical, digital

Research method bright eld bright eld

Magnication 40—1000x 40—1000x

Interpupillary distance — 48—75mm 48—75mm

monocular,

Eyepiece head

Optics material optical glass with an anti-fungal coating

Eyepiece tube diameter 30mm 30mm

Third vertical eyepiece tube — — 23.2mm 23.2mm

Eyepieces

Eyepiece diopter adjustment — ±5D ±5D

Objectives achromatic: 4x, 10x, 40xs, 100xs (oil)

Revolving nosepiece 4 objectives 4 objectives

Stage moving range 70/50mm 70/50mm

Stage

Focus system coaxial, coarse (30mm) and ne (0.002mm)

Condenser Abbe N.A. 1.25 iris diaphragm and lter holder

Body metal metal

Illumination lower (5W LED) with brightness adjustment

Filters blue, green, yellow blue, green, yellow

Vial of immersion oil + +

Fuse 2pcs 2pcs

Power supply 100—240V, via AC adapter 100—240V, via AC adapter

Digital camera — 5.1Mpx

Camera connector — — + + +

Camera power supply —

Optional accessories (sold separately)

360° rotatable,

inclined at 45°

WF10x/18mm

(1pc)

double layer mechanical, 125x130mm,

binocular, 360°

rotatable,

inclined at 30°

WF10x/18mm (2pcs) WF10x/18mm (2pcs)

with a mechanical scale

semi plan objectives: 4x, 10x, 20xs, 40xs, 60xs, 100xs (oil)

plan objectives: 4x, 10x, 20xs, 40xs, 60xs, 100xs (oil)

eyepieces (D 30mm): 5х, 12.5х, 16x, 20x

trinocular,

360° rotatable,

inclined at 30°

dark eld condenser

digital camera

trinocular, 360° rotatable,

inclined at 30°

optical glass with an anti-fungal

coating

achromatic: 4x, 10x, 40xs,

100xs (oil)

double layer mechanical,

125x130mm,

with a mechanical scale

coaxial, coarse (30mm)

and ne (0.002mm)

Abbe N.A. 1.25 iris diaphragm

and lter holder

lower (5W LED)

with brightness adjustment

DC 5V, via USB

2.0 cable

5Mpx with

LCD screen

DC12 W,

via AC adapter

Levenhuk reserves the right to modify or discontinue any product without prior notice.

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Caution! Please remember that mains voltage in most European countries is 220—240V. If you want to use your device

in a country with a dierent mains voltage standard, remember that use of a converter is absolutely necessary. The

microscope must be grounded. Make sure that the main voltage matches the voltage indicated on the microscope body.

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 rst 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 ngers. 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 uids to clean the optics.

• Abrasive particles, such as sand, should not be wiped o lenses, but instead blown o 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 nished 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 re and other sources of high temperatures.

• When using the microscope, try not to use it near ammable materials or substances (benzene, paper, cardboard, plastic, etc.), as

the base may heat up during use, and might become a re hazard.

• Always unplug the microscope from a power source before opening the base or changing the illumination lamp. Regardless of the lamp type (halogen or incandescent), give it some time to cool down before trying to change it, and always change it to a lamp of the same type.

• Always use the power supply with the proper voltage, i.e. indicated in the specications of your new microscope. Plugging the

instrument into a dierent power outlet may damage the electric circuitry of the microscope, burn out the lamp, or even cause a

short circuit.

• Seek medical advice immediately if a small part or a battery is swallowed.

Levenhuk International Lifetime Warranty

All Levenhuk telescopes, microscopes, binoculars and other optical products, except for accessories, carry a lifetime warranty against defects in materials and workmanship. Lifetime warranty is a guarantee on the lifetime of the product on the market. All Levenhuk accessories are warranted to be free of defects in materials and workmanship for six months from date of retail purchase. Levenhuk will repair or replace such product or part thereof which, upon inspection by Levenhuk, is found to be defective in materials or workmanship. As a condition to the obligation of Levenhuk to repair or replace such product, the product must be returned to Levenhuk together with proof of purchase satisfactory to Levenhuk. This warranty does not cover consumable parts, such as bulbs (electrical, LED, halogen, energy-saving and other types of lamps), batteries (rechargeable and non-rechargeable), electrical consumables etc. For further details, please visit our web site: www.levenhuk.com/warranty

If warranty problems arise, or if you need assistance in using your product, contact the local Levenhuk branch.