VWR VisiScope 260 Series User manual

Model European Catalogue Number
STB260 630-3072
SZB260 630-3073
SZT260 630-3074
INSTRUCTION MANUAL
VWR
Stereomicroscope series 260
Version: 1.0
Issued: 29, 07, 2019
1/2

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Table of Contents
Legal Address of Manufacturer
Country of origin: ITALY
Europe
VWR International bvba
Researchpark Haasrode 2020
Geldenaaksebaan 464
B-3001 Leuven
+ 32 16 385011
http://be.vwr.com
1. Warning 3
2. Safety Information 3
3. Package Contents 3
4. Unpacking 3
5. Intended use 3
6. Symbols and conventions 3
7. ProductSpecications 4
8. Overview 4
8.1 STB260 4
8.2 SZB260 / SZT260 5
8.3 Assembling procedure 6
9. Use of the microscope 8
9.1 Adjust interpupillary distance 8
9.2 Focus 8
9.3 Adjusting the tension of the focus knob 8
9.4 Dioptric compensation 9
9.5 Magnication 9
9.6 Use of additional lens (SZB260/SZT260) 10
9.7 Use of illumination 11
9.8 Use with rechargeable batteries 11
9.9 Use of eye shields 11
10. Microphotography 12
10.1 Installing the C-mount adapter 12
10.2 Useofreexcameras 12
11. Troubleshooting 13
12. Repair and maintenance 14
13. Technical service 14
14. Warranty 14
15. Compliance with local laws and regulations 14
Disposal 15

3
1. Warning
This microscope is a scientic precision instrument designed to last for many years with a minimum of mainte-
nance. It is built to high optical and mechanical standards and to withstand daily use.
We remind you that this manual contains important information on safety and maintenance, and that it must
therefore be made accessible to the instrument users.
We decline any responsibility deriving from incorrect instrument use that does not comply with this manual.
2. Safety Information
Avoiding Electrical Shock
Before plugging in the power supply, make sure that the supplying voltage of your region matches with the ope-
ration voltage of the equipment and that the lamp switch is in o󰀨 position.
Users should observe all safety regulations of the region. The equipment has acquired the CE safety label. Ho-
wever, users have full responsibility to use this equipment safely.
Please follow the guidelines below, and read this manual in its entirety to ensure safe operation of the unit.
3. Package Contents
DESCRIPTION QUANTITY
Stereomicroscope 1
Stereo head
-) Binocular, xed zoom: STB260
-) Binocular, variable zoom: SZB260
-) Trinocular, variable zoom: SZT260
1
Eyepiece WF10/21 1 PAIR
Transmitted light illuminator 1
Incident light illuminator 1
Stand with integrated focus system 1
Stage clips 1 PAIR
Power supply OUTPUT 5Vdc multiplug 1
Dust cover 1
4. Unpacking
The microscope is housed in a moulded Styrofoam container. Remove the tape from the edge of the container
and lift the top half of the container. Take care to ensure that the optical items (objectives and eyepieces) do not
fall out and get damaged. Using both hands (one around the neck and one around the base), lift the microscope
from the container and put it on a stable desk.
5. Intended use
For research and teaching use only. Not intended for any animal or human therapeutic or diagnostic use.
6. Symbols and conventions
The following chart is an illustrated glossary of the symbols that are used in this manual.
CAUTION
This symbol indicates a potential risk and alerts you to proceed with caution
ELECTRICAL SHOCK
This symbol indicates a risk of electrical shock.

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7. ProductSpecications
Model Head Eyepiece Objectives Working Distance Stand Illuminator
STB260 Binocular Wideeld
10x/21mm
2x - 4x
selectable
100 mm High-grade,
precision xed
with handle and
focus
Swiveling incident and transmitted with
brightness control, rechargeable batteries
SZB260 Binocular Wideeld
10x/21mm
0.7x - 4.5x
variable zoom
100 mm High-grade,
precision xed
with handle and
focus
Swiveling incident and transmitted with
brightness control, rechargeable batteries
SZT260 Trinocular Wideeld
10x/21mm
0.7x - 4.5x
variable zoom
100 mm High-grade,
precision xed
with handle and
focus
Swiveling incident and transmitted with
brightness control, rechargeable batteries
8. Overview
8.1 STB260
MAGNIFICATION
CHANGER
STAGE CLIPS
TRANSPORTATION
HANDLE
FOCUS KNOB
STAND
EYEPIECES
TRANSMITTED LIGHT
ON/OFF AND
INTENSITY CONTROL
INCIDENT LIGHT
ON/OFF AND
INTENSITY CONTROL
MICROSCOPE
BODY
TRANSLUCENT DISC
(TRANSMITTED LIGHT)
INCIDENT LIGHT
ILLUMINATOR

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8.2 SZB260 / SZT260
TRANSPORTATION
HANDLE
MICROSCOPE BODY
-) SZB260: BINOCULAR
-) SZT260: TRINOCULAR
INCIDENT LIGHT
ON/OFF AND
INTENSITY CONTROL
TRANSMITTED LIGHT
ON/OFF AND
INTENSITY CONTROL
FOCUS KNOB
INCIDENT LIGHT
ILLUMINATOR
STAGE CLIPS
STAND
TRANSLUCENT DISC
(TRANSMITTED LIGHT)
EYEPIECES
ZOOM KNOB
PHOTO/TV PORT
(ONLY SZT260)

6
8.3 Assembling procedure
• The microscope is shipped from the factory
with the batteries already installed. However,
in some cases it is necessary to ship the mi-
croscope with the batteries disconnected.
1. Open the lid of the battery compartment. (Fig. 1)
2. Insert the provided rechargeable batteries (re-
specting the polarity of each battery). (Fig. 2)
3. Close the lid.
4. Insert the microscope body in the holder.(Fig. 3)
5. Lock the xing knob ①. (Fig. 4)
Fig. 1
Fig. 2
Fig. 3
Fig. 4
①

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6. Remove the eyepieces dust caps and insert the
eyepieces in the empty eyepiece sleeve. (Fig. 5)
7. Connect the jack of the power supply to the sock-
et in the rear part of the microscope base. (Fig. 6)
Fig. 5
Fig. 6

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9. Use of the microscope
9.1 Adjust interpupillary distance
Hold the right and left eyepiece tube with both hands
and adjust the interpupillary distance by moving the
two parts (Fig. 7) until one circle of light can be seen.
If two circles appear, the interpupillary distance is too
big, and if two overlapped circles appear, the interpu-
pillary distance is too small.
9.2 Focus
Put the sample to be observed on the stage plate
and focus the sample using the focusing knobs of the
stand ①. (Fig. 8)
9.3 Adjusting the tension of the focus knob
• This adjustment allows to increase or decre-
ase the tension of the knob by avoiding an
involuntary descent of the microscope body
under its own weight. Adjust the tension just
above the point where the focus is stable.
Grab the focus knobs with both hands and, holding
left knob rotate the right one in the direction shown in
Fig. 9 to increase the tension. Tension increases or
decreases according the sense of rotation of the right
focus knob.
Fig. 7
Fig. 8
Fig. 9
①
HOLD

9
Fig. 10
②
③
9.4 Dioptric compensation
• This compensation makes possible for peo-
ple wearing glasses to adjust the microscope
to their eyes and use the microscope without
glasses.
1. Put the zoom ② down to the lowest magnication
and focus the specimen with the focusing knobs
③. (Fig. 10)
2. Put the zoom to the maximum magnication and
repeat the focusing.
3. Return to the lowest magnication: the specimen
will be out of focus.
4. Adjust the diopter compensation ring of the right
eyepiece ④ until the image of the right eyepiece
is clear and sharp (Fig. 11). Repeat the procedure
for the left eyepiece.
5. Then, check the focus of the image for the whole
zoom range. It should now be perfectly parfocal
(focus is always maintained during the change of
magnication).
9.5 Magnication
STB260
1. Rotate the magnication changer ⑤ to insert the
desired lens in the optical path. (Fig. 12)
• Rotation in clockwise direction will change from
2X to 4X lens.
• Counterclockwise rotation will change from 4X to
2X lens.
SZB260/SZT260
1. Select the desired magnication by adjusting the
zoom knobs ⑥.
• Change the eyepieces and/or add an appropriate
additional lens if necessary.
• The microscope body is equipped with a “ma-
gnication lock” function that allows to obtain a
precise setting of the desired magnication. Ma-
gnication lock can be activated or deactivated
by operating with the provided allen wrench in the
hole ⑦ placed in front of the microscope body.
(Fig. 13)
Fig. 12
⑤
Fig. 13
Fig. 11
④
⑥⑦
⑥

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9.6 Use of additional lens (SZB260/SZT260)
Screw the desired additional lens on the microscope
body. (Fig. 14)
Each additional lens has a specic Working Distance
(see table below).
The stroke of the focus adapter could not compen-
sate the di󰀨erent working distances of the several
additonal lenses.
Fig. 14
Total magnication used can be calculated as:
Eyepiece magnication * Zoom magnication * Objective lens magnication.
Eyepiece 10X 15X 20X
Field number 21 15 10
Objective Total mag. F.O.V. (mm) Total mag. F.O.V. (mm) Total mag. F.O.V. (mm)
0,5X (W.D.165 mm) 3.5X-22.5X 59.99-9.32 5.25X-33.75X 28.57-4.44 7X-45X 14.28-2.22
0.75X (W.D. 114 mm) 5.25X-33.75X 40-6.21 7.87X-50.62X 19.06-2.96 10.50X-67.5X 9.52-1.48
1X (W.D. 100 mm) 7X-45X 29.99-4.66 10.5X-67.5X 10.95-2.22 14X-90X 7.14-1.11
1.5X (W.D. 47 mm) 10.50X-67.5X 20-3.10 15.75X-101.25X 9.52-1.48 21X-135X 4.76-0.74
Fig. 15
Fig. 16
9.6.1 Use of 0.5X additional lens
0.5X additional lens has a Working Distance of 165
mm and therefore the total stroke of the focus pillar
cannot compensate.
In order to let the 0.5X additional lens working pro-
perly, proceed as follows:
1. Screw the additional lens on the microscope body
as already described in chapter 8.6.
2. Uninstall the microscope body from the head hol-
der.
3. Install the provided spacer ① in the head holder
and screw the xing knob ②.(Fig. 15)
4. Re-install the microscope body onto the spacer
and screw the xing knob ③.(Fig. 16)
5. Begin working normally.
③
②
①

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9.6.2 Use of 1.5X additional lens
1.5X additional lens has a Working Distance of 47
mm and, in case of very thin specimens, the micro-
scope cannot get a proper focus.
In order to overcome this e󰀨ect, the 1.5X lens is pro-
vided with a transparent spacer ④ that must be pla-
ced on the base plate (Fig. 17).
Once placed the transparent spacer, the user can put
the specimen on the spacer and begin the observa-
tion as usual.
9.7 Use of illumination
1. Turn the transmitted light knob ⑤in order to turn
ON/OFF or to change the intensity of the transmit-
ted light LED. (Fig. 18)
2. Turn the incident light knob ⑥in order to turn ON/
OFF or to change the intensity of the incident light
LED.
• It is possible to use both illuminations at the same
time.
9.8 Use with rechargeable batteries
When the power supply is connected to the micro-
scope socket, the “CHG” led ⑦ is lit. (Fig. 19)
RED light: battery with low charge or recharging
GREEN light: battery charged.
• NOTE: when the power supply is disconnected,
the CHG led is always o󰀨.
9.9 Use of eye shields
• Use with eyeglasses
Fold rubber eyeshields with both hands. Folded
eyeshields avoid scratching the lenses of eyeglasses.
(Fig. 35)
Fig. 19
⑦
Fig. 17
Fig. 18
④
⑤
⑥
Fig. 20

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• Use without eyeglasses
Raise eye shields and observe at the microscope
placing eyes to the shields, avoiding external light to
disturb the observation. (Fig. 21)
10. Microphotography
10.1 Installing the C-mount adapter
1. Loosen the clamping screw ①on the trinocular
port and remove the dust cap ②. (Fig. 22)
2. Screw the C-mount adapter ③to the camera ④
and insert the round dovetail of the C-mount into
the empty hole of the trinocular port (Fig. 23),
then tighten the clamping screw ①. (Fig. 22)
10.2 Useofreexcameras
1. Insert the Reex adapter ①into the relay tube ②.
2. Screw the “T2” ring ③ (not provided) to the reex
adapter.
3. Connect the Reex camera ④ to the “T2” ring just
installed. (Fig. 24)
4. Install the other end of the relay tube ② into the
microscope as already explained in chapter 10.1.
• “T2” ring is not provided along with the microsco-
pe, but is commercialy available.
• While shooting dark specimens, darken eyepie-
ces and viewnder with a dark cloth to miminize
the di󰀨used light.
• To calculate the magnication of the camera:
objective magnication * camera magnication *
lens magnication.
• When using an SLR camera, mirror mo-
vement may cause the camera to vibrate.
Wesuggestlifting themirror, usinglongex-
posure times and a remote cord.
Fig. 21
Fig. 22
Fig. 23
Fig. 24
①
②
④
③
①②
③
④

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11. Troubleshooting
Review the information in the table below to troubleshoot operating problems.
PROBLEM CAUSE SOLUTION
I. Optical Section:
The illumination is ON, but the eld of
view is dark. The plug is not connected to the il- lumination Connect the cable
The brightness is too low Adjust to a proper setting
The edge of the eld of view is
vignetted or the brightness is
asymmetric.
The incident illuminator is not correctly
oriented Change the angle of the incident il- luminator
Dust and stains can be seen in the
eld of view. There are stains and dust on the specimen Clean the specimen
There are stains and dust on the
eyepiece Clean the eyepiece
Poor image quality:
• The image is not sharp
• The contrast is not high
• The details are not clear
The lenses (additional lens, objective,
eyepieces) are dirt Throughly clean all the optical system
One side of the image is out of focus. The specimen is out of place (tilted) Place the specimen at on the stage.
II. Mechanical Section:
The focus knob is hard to turn. The tension adjustment collar is too
tight Loosen the tension adjustment collar
The focus is unstable. The tension adjustment collar is too
loose Tighten the tension adjustment collar
III. Electric Section:
The LED doesn’t turn on. No power supply Check the power cord connection
The brightness is not enough The brightness adjustment is low Adjust the brightness
The light blinks The power cord is poorly connected Check the power cord
IV. Viewing tube assembly:
The eld of view of the two eyes is
di󰀨erent The interpupillar distance is not cor- rect Adjust the interpupillar distance
The dioptric correction is not right Adjust the dioptric correction
The viewing technique is not cor-
rect, and the operator is straining the
eyesight
When look into the eyepieces, do not
stare at the specimen but look at the
whole eld of view. Periodically, move
the eyes away to look at a distant ob-
ject, then back into the eyepieces
V. Microphotography and video:
The image is unfocussed Incorrect focussing Adjusting the focus system as in the
present manual
Bright patches appear on the image Stray light is entering the microscope
through the eyepieces and through
the camera viewnder
Cover the eyepieces and the view-
nder with a dark cloth

14
12. Repair and maintenance
Microscopy environment
This microscope is recommended for use in a clean, dry and shock free environment with a temperature of
0-40°C and a maximum relative humidity of 85 % (non condensing). Use a dehumidier if needed.
To think about when and after using the microscope
The microscope should always be kept vertical when moving it so that no moving parts, such as the eyepieces,
fall out. Never mishandle or impose unnecessary force on the microscope.
Never attempt to service the microscope yourself.
After use, turn down the illumination intensity control and turn the light o󰀨. Cover the microscope with included
the dust cover, and keep it in a dry and clean place.
Electrical safety precautions
Before plugging in the power supply, make sure that the supplying voltage of your region matches with the ope-
ration voltage of the equipment and that the lamp switch is in o󰀨-position.
Users should observe all safety regulations of the region. The equipment has acquired the CE safety label. Ho-
wever, users do have full responsibility to use this equipment safely.
Cleaning the optics
If the optical parts require cleaning rst use compressed air.
If that is not su󰀩cient use a soft lint-free cloth with water and a mild detergent.
And as a nal option use the piece of cloth moistened with a 3:7 mixture of ethanol and ether.
• Note: ethanol and ether are highly ammable liquids. Do not use them near a heat source, near sparks or
near electric equipment. Use these chemicals in a well ventilated room.
Remember to never wipe the surface of any optical items with your hands. Fingerprints can damage the optics.
Do not disassemble objectives or eyepieces attempting to clean them.
For the best results, use the VWR cleaning kit.
If you need to send the microscope to manufacturer for maintenance, please use the original packaging.
13. Technical service
Web Resource
Visit the VWR’s website at www.vwr.com for:
• Complete technical service contact information
• Access to VWR’s Online Catalogue, and information about accessories and related products
• Additional product information and special o󰀨ers
Contact us For information or technical assistance contact your local VWR representative or visit. www.vwr.
com.
14. Warranty
VWR International warrants that this product will be free from defects in material and workmanship for a period
of ve (5) years from date of delivery. If a defect is present, VWR will, at its option and cost, repair, replace, or
refund the purchase price of this product to the customer, provided it is returned during the warranty period. This
warranty does not apply if the product has been damaged by accident, abuse, misuse, or misapplication, or from
ordinary wear and tear. If the required maintenance and inspection services are not performed according to the
manuals and any local regulations, such warranty turns invalid, except to the extent, the defect of the product is
not due to such non-performance.
Items being returned must be insured by the customer against possible damage or loss. This warranty shall be
limited to the aforementioned remedies. IT IS EXPRESSLY AGREED THAT THIS WARRANTY WILL BE IN LIEU
OF ALL WARRANTIES OF FITNESS AND IN LIEU OF THE WARRANTY OF MERCHANTABILITY.
15. Compliance with local laws and regulations
The customer is responsible for applying for and obtaining the necessary regulatory approvals or other authori-
zations necessary to run or use the Product in its local environment. VWR will not be held liable for any related
omission or for not obtaining the required approval or authorization, unless any refusal is due to a defect of the
product.

15
Disposal
This equipment is marked with the crossed out wheeled bin symbol to indicate that this equipment must not be
disposed of with unsorted waste.
Instead it is your responsibility to correctly dispose of your equipment the end of its life cycle by handling it over
to an authorized facility for separate collection and recycling. It is also your responsibility to decontaminate the
equipment in case of biological, chemical and/or radiological contamination, so as to protect from health hazards
the persons involved in the disposal and recycling of the equipment.
For more information about where you can drop o󰀨 your waste equipment, please contact your local dealer from
whom you originally purchased this equipment.
By doing so, you will help to conserve natural and environmental resources and you will ensure that your equip-
ment is recycled in a manner that protects human health.
Thank you

16
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