BestScope BS-2030MH4A Manuel utilisateur

Multi-Head Biological Microscope

BS-2030MH4A

Instruction Manual

This manual is for biological microscope Model BS-2030MH4A. To ensure the safety, obtain

optimum performance and to familiarize yourself fully with the use of this microscope, it is strongly

recommended that you study this manual thoroughly before operating the microscope.

BestScope International Limited

A. Applications:

The biological microscope for teaching BS-2030MH4A is designed for 2 persons to view

simultaneously and is provided with achromatic objectives, wide field eyepieces, abbe condenser,

adjustable built-in light source and also coaxial coarse and fine adjustment with focus stop. This

microscope with his wide field eyepieces gives a nice and sharp image and is designed in a very

modern way. It is specially designed for clinical examination and teaching demonstration in

laboratories, colleges and medical field, it is also an ideal instrument for biological bacteriological,

pathological and pharmaceutical research.

B. Specifications：

1. 2PCS of Binocular head

2. Eyepiece：

Designation

magnification

field of view

focal length

WF eyepiece

10x

18mm

24.95mm

3. Objective:

Designation

Magnification

numerical aperture

Working distance

(mm)

0.1

37.5

10x

0.25

7.316

40x

0.65

0.632

Achromatic

100x

1.25

0.198

4. Total magnifications:

Objective

10x

40x

100x

Eyepiece

10x

Total magnification

40x

100x

400x

1000x

5. Conjugate distance: 195mm

6. Abbe condenser: NA=1.25 with iris diaphragm and filter

7. Coarse focusing range: 30mm with coarse focusing stop

8. Fine focusing range: 30mm with focusing division interval: 0.002mm

9. Area of Double layers mechanical stage: 140X140mm

Moving range: 75X50mm

10. Built-in illumination, 6V20W halogen lamp

C. structure：

1. Mounting

Mounting is the base of the microscope. It supports the all weight of the microscope. This

mounting has four rubber foots and that makes this instrument stable.

2. Illumination system:

In order to make observed specimen have enough brightness and make the resolving power of

the objectives be used fully, this instrument adopt 6v20w built-in brightness variable lamp. It

BestScope International Limited

composed with condenser and iris diaphragm, turning the iris of the condenser and making the

aperture of condenser suitable for the aperture of objective, the condenser is composed of two

parts. One is installed on trestle. This trestle can move up and down by rack and gear. The

light axis of the condenser must coincide with the light axis of this instrument. When it

diverge, adjust three screws in the trestle of the condenser. The other is installed on the

mounting.

3. Stage and shifter:

Stage is installed on stage rack. It can move up and down and is perpendicular to optical

axis .the shifter can make the specimen move transversely and longitudinally.

4. Eyepiece, objective and nosepiece;

The microscope imaging system is composed of eyepiece and objective according to their

magnifications. Rotate the objectives into the threaded holes of the nosepiece. So that when

turning the nosepiece. You can change the objectives and get the needed magnification swiftly.

The nosepiece adopts precise and advanced structure .when changing the objectives, the center

area of the field view always locates within the range of observing and satisfies the focusing

requirement.

Three persons observe in the same time, two monocular heads and one binocular can rotate

3600, in the field view, the center of the image is coincident. This is guaranteed by the

instrument, so that the operator do not adjust by themselves. The eyepiece tube is inclined

450,so it observed comfortable and convenient.

5. Coarse and fine focusing equipment

This instrument adopts coaxial coarse and fine focusing equipment.The knobs are located

below the stage. So it is easy to operate coarse focusing range is 30mm. Fine focusing range is

30mm too. There is knob beside each coarse focusing knob. One is used as tightness

adjustment for coarse focusing knob. The other is used as coarse focusing stopper. When you

lower the stage and raise it again the stage is at the same level. When you do not the location,

you can turn the flange of the stopper and loose it.

D. Usage:

1. Rotate the objectives in sequence, according to their magnification, into the 4 thread of the

nosepiece. Insert the eyepiece into the inclined eyepiece tube.

2. Put the specimen on the stage. Adjust shifter and make the specimen in the center of the hole

of the stage.

3. First use objective 10x, turn the coarse focusing knob and make the objective near specimen

and then observe the image through eyepiece and turn the coarse focusing knob down until you

can see the specimen image. After that turn the fine focusing knob until you get a sharp image.

Because this instrument adopts precise and reliable nosepiece, you can always observe a clear

image with different objectives.

BestScope International Limited

E. The complete set of the microscope:

Items

Contents

Quantity

Main Body

1set

Eyepiece P10x

4 pcs

Objective 4x,10x,40x,100x

1set

Binocular head

2pcs

Shifter

1pc

Spare lamp

1pc

Operation manual

1 copy

F. Maintenance:

1. The microscope is the same as other optical instrument. Need to be kept in cool, dry, dustless

and acidless place. The instrument should be covered with dust guard after using.

2. Never disassemble the lens because they are corrected stringently. If there is stain on the lens,

it can wipe out by alcohol, but you should pay attention not to seep it into the inside of the

objectives so as not to dissolve glue. Dust on the lens can be wiped away by clean brush.

3. Coarse and fine focusing equipment and nosepiece are precisely constructed and should not be

dismantled without authorization.

4. When not in use, keep the objectives in the objective box and cover the eyepiece tube with

eyepiece tube cover.

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