Manual for compound,
monocular microscope
The compound microscope allows you to study,
at cell level, structures and textures of botanical
and zoological nature. (e.g. slides of roots,
leaves and stems or blood, skin and hairs).
Depending on the chosen microscope, the total
magnification lies between 40-1000 times. By
using different accessories, this magnification
can be expanded.
Applicable for: BMS 2, BMS 100 and BMS 200
series. For article numbers, see below.
1: Scope of delivery (numbers refer to the photo on page 5):
1) Eyepiece WF 10x, with pointer
2) Monocular tube
3) Fixation screw to secure eyepiece
4) Microscope head, with prism. 360 º rotatable
5) Full metal stand
6) Full metal base with electrical parts and main lead.
7) Nose piece, revolving. Depending on model either triple or quadruple
8) Objectives, DIN Achromatic (with plastic containers)
4x/N.A. 0,10
10x/N.A. 0,25
40x/N.A. 0,65 spring loaded
100x/N.A. 1,25 spring loaded, oil immersion (only in models with quadruple
nose piece)
9) Coarse adjustment with slip clutch
10)Tension adjustment on coarse knob (9)
11)Fine adjustment
12)Fuse
13)On-off switch
14)Lamp house with condenser lens
15)Iris diaphragm adjustable to 100% opening. Abbe condenser N.A. 1,25 (only
in models with quadruple nose piece)
16) Fixed condenser lens N.A. 0,65 (only in models with triple nosepiece).
17)Filter holder
18)Blue filter
19) Stage
20) Stage clips (stainless steel)
21) Adjustable slide protection
22)Wrench, to adjust tension on coarse adjustment (9)
23) Dust cover
Always disconnect mains plug from power point
before maintenance
2: To get started
The objectives have already been placed in the nose piece in the right sequence.
They are parfocal and parcentered. Unless necessary, do not remove the objectives.
Put the plug into an earthed power point (see if the right voltage is provided). Switch
on the lamp. To guide the light through the slide and the optical system in the most
efficient way, the iris diaphragm and condenser (**) should be adjusted as follows:
open the iris diaphragm (15) totally
rotate the nose piece (7) to place objective 4x in line with the slide
unscrewing the fixation screw (3)
remove the eyepiece (1) from the tube (2)
close the iris diaphragm until 70-80% of the light is still allowed to pass
place the eyepiece back in the tube
The clarity of the image depends upon the size of the aperture. As the aperture
becomes smaller, the contrast and depth of focus increases, but the resolving power
decreases. The right combination of these factors resolve into the clearest image.
In case of an adjustable Abbe condenser N.A. 1,25 please take notice of following.
When using an objective with a higher numerical aperture (N.A.) proper focussing of
the Abbe condenser is important. Adjust the Abbe condenser by turning it up or
down. Make sure that the field of view is evenly illuminated.
Place the slide on the stage (19), lift up the stage clips (20), and secure the slide.
Make sure the objective with the smallest magnification (4x) is above the slide.
Use coarse adjustment (9) to focus the specimen. After this, the fine adjustment (11)
is used to refine the image. By revolving the nose piece, and bring another objective
in the path of light, a different total magnification will be reached. If magnification is
increased step by step (revolving nose piece to objective with higher magnification),
usually focussing can be done just using fine focussing adjustment (11).
(**) only applicable in models with adjustable condenser
3: Safety notes
Only use earthed power points.
Before maintaining, opening or cleaning the microscope make sure the mains
plug is disconnected from the power point.
Clean the optical parts only with a soft cloth. Do not touch the lenses with your
fingers. Do not soak the lenses in cleaning liquids.
Do not allow any contact between liquids and electrical parts.
4: Replacing bulb ( Not applicable for the LED-CIS microscopes )
Read point 3, Safety notes, carefully
Wait until the temperature of the microscope and electrical parts are cool
Never touch the bulb with naked fingers
Be sure of using the same type of spare bulb as used in the microscope
By the microscope with the tungsten lamp ( 76002, 76010, 76015 & 76021 ) the light
bulb can be changed by unscrewing the lamp house ( Be sure it is cooled down ).
To prevent condensation of the optical parts,
it is recommendable to let the microscope get adapted to the room temperature
while still in the original packing
Now the tungsten lamp can be removed by unscrewing it. Screw the new light bulb in
place ( do not touch the lamp with naked fingers ) and screw the lamp house back in
place.
By the microscope with the halogen lamp ( 76013 & 76016 ) the halogen light can be
changed by unscrewing the lamp house ( Be sure it is cooled down ). Now the
halogen lamp can be removed by gently pulling it. Insert the new light in place until it
is secured ( do not touch the lamp with naked fingers ) and screw the lamp house
back in place.
By the microscope with fluorescent or adjustable halogen illumination ( 76014,
76017, 76018 & 76019) the lamp can be changed by laying the microscope gently on
its side. On the front side of the bottom there is a large flat screw, remove this screw
with a screwdriver. Now the bottom can be opened and the lamp appears. This lamp
can be removed by pulling it forward in case of the fluorescent illumination, or pulling
it upward in case of the halogen illumination. Insert the new lamp ( Do not touch the
lamp with your naked fingers ) and close the bottom of the microscope. Insert the
large flat screw and tighten it.
5: Replacing fuse (12) (Not applicable for LED-CIS and Art. Nr. 76013 & 76016)
Read point 3, Safety notes, carefully
Wait until the temperature of the microscope and electrical parts are cool
The fuse is located on the back of the stand ( 76002, 76010, 76014, 76015,
76017, 76018, 76019 & 76021 )
Use a screw driver to open the housing of the fuse by turning it counter
clockwise
Take broken fuse out
Replace new fuse after being sure of using same rating in new fuse
Screw fuse holder back in place
6: Storage
Store the microscope in a dry and dust free area. Always use the dust cover (23).
For carrying case see the accessory list.
7: Accessories
BMS Art. Nr. Description BMS
2
BMS
100
BMS
200
76055 Lamp 220V-20W 76002 76010
76021
76015
76035 Movable specimen holder
76351 Halogen lamp 12V-20W - 76017 76058 Print plate with PL bulb - 76018 76059 Halogen lamp 12V-10W, reflector - 76013 76016
76472 Fluorescent light bulb 5W PL - 76014 76052 Plan-concave mirror 76000 76005 77070 Illuminator 220V-15W 76000 76005 -
BMS Art. Nr. Description BMS
2
BMS
100
BMS
200
76045 Eyepiece Huygenian 5x x x x
76044 Eyepiece Huygenian 10x x x x
76046 Eyepiece WF 10x x x x
76047 Eyepiece WF 15x x x x
76040 DIN Achromatic Objective 4x x x x
76040 DIN Achromatic Objective 10x x x x
76041 DIN Achromatic Objective 40x,
springloaded
x x x
76040 DIN Achromatic Objective 60x
springloaded
x x x
76040 DIN Achromatic Objective 100x
springloaded, oil
x x x
76050 Stage clips (stainless steel) x x x
76053 Blue filter x x x
76054 Dust cover x x x
76070 Polarisation set x x x
76031 Carrying case, wood x x x
- = not suited for mentioned models
x = for all models
This manual is applicable for series and models with following article numbers.
BMS 2 series : 76000 and 76002
BMS 100 series : 76005, 76007,76008, 76009, 76010, 76012, 76013, 76014,
76017, 76018, 76019, 76021.
BMS 200 series : 76015, 76016.
BMS 1001FL Jubilee: 76024
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BMS 100FL
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