LEVENHUK 500B (01) PDF MANUAL

LEVENHUK 500B (01) PDF SUMMARY:

What safety precautions should be taken when using the Levenhuk 500 Series Microscopes?

The user manual for the Levenhuk 500 Series Microscopes emphasizes several critical safety precautions. Never, under any circumstances, look directly at the Sun, another bright source of light, or a laser through the 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.

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What should be checked before using the microscope for the first time?

After unpacking your microscope and before using it for the first time, check for the integrity and durability of every component and connection.

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What are the general recommendations for maintaining the microscope?

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.

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What precautions should be taken regarding flammable materials?

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.

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What type of power supply should be used with the microscope?

Always use the power supply with the proper voltage, i.e. indicated in the specifications of your new microscope. Plugging the instrument into a different power outlet may damage the electric circuitry of the microscope, burn out the lamp, or even cause a short circuit.

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What should be done if a small part or battery is swallowed?

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

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What is the first step in the microscope assembly process?

Unpack the microscope carefully and place it on a flat surface.

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What should be removed from the microscope after unpacking?

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

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What needs to be installed and secured on the microscope head?

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

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Before connecting the power, what should be done with the included items?

Inspect all the items included in the kit and define their purpose.

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How do you connect the microscope to a power source?

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

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How do you initially power on the microscope and set the illumination?

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

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How should a specimen be placed on the stage?

Place the specimen on the stage. Make sure the clips hold the specimen firmly in place.

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How should the iris diaphragm be adjusted?

The iris diaphragm should be adjusted in accordance with the 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.

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What is the iris diaphragm not intended for?

The diaphragm is not intended for adjusting the brightness of the illumination. To adjust the brightness, use the brightness adjustment knob.

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How to install filter?

Slide the filter holder, place the filter in it and then return the holder to its initial position.

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How to change the objective magnification?

To change the objective magnification, turn the revolving nosepiece until it clicks.

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What precaution should be taken when adjusting the focus?

Make sure that the lens does not touch the sample when adjusting the focus.

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How do you initially focus on the specimen?

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.

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How do you achieve a clear image after coarse focusing?

Turn the fine focusing knob to make the image clear. The fine focusing mechanism allows you to focus on the observed specimen while using high magnifications.

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What should be done when using an oil immersion objective?

When you use an oil immersion objective, the space between the specimen and the lens should be filled 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, fix the objective lens in its working position. Make sure that oil fills the entire space between the objective lens and the specimen.

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What should be done after using the oil immersion objective?

After use, wipe the lens dry.

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How should the position of the mechanical scale be adjusted?

To adjust the position of the mechanical scale (except for 500M and 500T POL), turn the coarse focusing knob in a clockwise direction if you want to fix the position of the mechanical scale, or in a counterclockwise direction if you want to loosen it.

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How do you move the specimen within the field of view?

To place the specimen in the field of view, move the stage horizontally back and forth or left and right using the stage moving knobs (except for 500M and 500T POL).

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How do you adjust the image sharpness for the right eye?

Look through the right eyepiece with your right eye and adjust the image sharpness with the coarse and fine focusing knobs.

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How is the diopter adjustment used for binocular and trinocular models?

Binocular and trinocular models: Then, look through the left eyepiece with your left eye and rotate the diopter adjustment ring to equalize the difference between your left and right eyes vision. Remember the setting for future use.

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How do you optimize the view in binocular heads?

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

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What is unique about the trinocular models regarding camera installation?

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

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How do you set up the microscope for observation in polarized light? Insert the analyzer into a special slot on the back of the microscope to start observing in polarized light. Set the polarizer to “0”.

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How the polarizer and analyzer are positioned orthogonally? Set the polarizer to “0” – the polarizer and analyzer will be positioned orthogonally.

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How to change the polarization angle? Rotate the polarizer ring to change the polarization angle.

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What can you do with the round stage on the Levenhuk 500T POL microscope?

By using the rotation of the stage, you can change the angle of polarization and observe changes in the refraction of light.

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How do you rotate the stage on the Levenhuk 500T POL? Loosen the retainer in order to rotate the stage and tighten the retainer to secure the stage.

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How do you replace the halogen bulb?

Unplug the microscope from a power source. Loosen the knurled screw on the underside of the microscope and open the panel to expose the bulb. Make sure the lamp has cooled down and then remove it. Do not touch the new lamp with your fingers; fingerprints or dirt will reduce the brightness and the lamp’s life. Use gloves to replace the lamp. If necessary, wipe the lamp with a clean, soft cloth. Use a lamp of a suitable type. Insert the contacts into the slot vertically. Close the panel and tighten the knurled screw with finger.

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How do you replace the fuse?

Unplug the microscope from a power source. Open the fuse holder located on the back of the microscope body with a flat head screwdriver. Remove the old fuse and install a new one. Only use the appropriate types of fuses. Close the fuse holder.

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What are the specifications of the Levenhuk 500M microscope?

Specification	Value
Product ID	75424
Model	Levenhuk 500M
Type	biological/optical
Research method	bright field
Magnification	40–400x
Eyepiece head	monocular, 360° rotatable, inclined at 45°
Optics material	optical glass
Eyepiece tube diameter	23.2mm
Eyepieces	WF10x/18mm (1pc) with a pointer
Objectives	achromatic: 4x, 10x, 40xs
Revolving nosepiece	3 objectives
Stage	110x110mm, with specimen holders
Focus system	coaxial, coarse (30mm) and fine (0.002mm)
Condenser	N.A. 0.65 iris diaphragm and filter holder
Body material	metal
Illumination	lower (halogen, 12V/20W) with brightness adjustment
Collector	+
Power supply	110–220V, via AC adapter

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What are the specifications of the Levenhuk 500B microscope?

Specification	Value
Product ID	75425
Model	Levenhuk 500B
Type	biological/optical
Research method	bright field
Magnification	40–1000x
Interpupillary distance	48–75mm
Eyepiece head	binocular, 360° rotatable, inclined at 30°
Optics material	optical glass
Eyepiece tube diameter	23.2mm
Eyepieces	WF10x/18mm (2pcs)
Eyepiece diopter adjustment	±5D
Objectives	achromatic: 4x, 10x, 40xs, 100xs (oil)
Revolving nosepiece	4 objectives
Stage moving range	70/30mm
Stage	double layer mechanical, 115x125mm, with mechanical scale
Focus system	coaxial, coarse (30mm) and fine (0.002mm)
Condenser	Abbe N.A. 1.25 iris diaphragm and filter holder, with adjustable height
Body material	metal
Illumination	lower (halogen, 12V/20W) with brightness adjustment
Collector	+
Filters	blue, green, yellow
Vial of immersion oil	1pc
Power supply	110–220V, via AC adapter

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What are the specifications of the Levenhuk 500T microscope?

Specification	Value
Product ID	75426
Model	Levenhuk 500T
Type	biological/optical
Research method	bright field
Magnification	40–1000x
Interpupillary distance	48–75mm
Eyepiece head	trinocular, 360° rotatable, inclined at 30°
Optics material	optical glass
Eyepiece tube diameter	23.2mm
Third vertical eyepiece tube	23.2mm
Eyepieces	WF10x/18mm (2pcs)
Eyepiece diopter adjustment	±5D
Objectives	achromatic: 4x, 10x, 40xs, 100xs (oil)
Revolving nosepiece	4 objectives
Stage moving range	70/30mm
Stage	double layer mechanical, 115x125mm, with mechanical scale
Focus system	coaxial, coarse (30mm) and fine (0.002mm)
Condenser	Abbe N.A. 1.25 iris diaphragm and filter holder, with adjustable height
Body material	metal
Illumination	lower (halogen, 12V/20W) with brightness adjustment
Collector	+
Filters	blue, green, yellow
Vial of immersion oil	1pc
Fuse
Power supply	110–220V, via AC adapter
Camera connector	+

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What are the specifications of the Levenhuk 500T POL microscope?

Specification	Value
Product ID	75427
Model	Levenhuk 500T POL
Type	biological/optical
Research method	bright field, polarized light
Magnification	40–1000x
Interpupillary distance	48–75mm
Eyepiece head	trinocular, 360° rotatable, inclined at 30°
Optics material	optical glass
Eyepiece tube diameter	23.2mm
Third vertical eyepiece tube	23.2mm
Eyepieces	WF10x/18mm (2pcs)
Eyepiece diopter adjustment	±5D
Objectives	achromatic: 4x, 10x, 40xs, 100xs (oil)
Revolving nosepiece	4 objectives
Stage	360° rotatable, Ø135mm, with specimen holders
Focus system	coaxial, coarse (16mm) and fine (0.002mm)
Condenser	Abbe N.A. 1.25 iris diaphragm and filter holder, with adjustable height
Body material	metal
Illumination	lower (LED 3W) with brightness adjustment
Collector	+
Polarizer	—
Analyzer	+
Filters	blue, green, yellow
Vial of immersion oil
Fuse
Power supply	110–220V, via AC adapter
Camera connector	+