Stereo Zoom Microscope
To Ensure safety and obtain optimum performance and familiarize yourself with the use of this microscope, we recommend you read this manual before operating the microscope. Retain this instruction in an easily accessible place near the microscope for further reference
Structure and Characteristic
Main Technology Parameter
Assemblage and Usage of the Attachments
This instruction is for ST-8 Series Zoom Stereo Microscope
Please read the instruction carefully before using
Proper modification can be made without notice
Please contact manufacturer if something unclear or incorrect is found
The product you purchase may not include all the things mentioned in the manual
Please operate the instrument as the instruction
Safety problems have been fully considered when design, users may get hurt or instrument can get damaged if improper operations are taken. For your safety,please read the instructions carefully before using.
1. Specified use
The instrument can be used formicro observation only
2. Do not take the microscope apart
As it will be damaged. Please contact manufacturer if the microscope does not work
3. Make sure the input voltage
The correct input voltage is marked on the power supply of the illumination.
Make sure the voltage in your position is right. Improper input voltage may cause short circuit and fire. Please contact manufacturer if you have any questions
4. Power supply cord
Please turn off the power supply and pull out the cord when replacing the bulbs
5. Temperature for illumination
The temperature will be high if the bulb is lightened. Do not put fiber, papers and inflammable things (eg. Gasoline, aether, methanol and ethanol) close to the bulb
1. Be careful when replacing the bulbs
The bulb will be heated after using. Replace the bulb when it has been cooling enough to avoid scald.
2. Check the illumination
Specific bulbs can be used. Bulbs with different specifications may cause damage to the instrument. Refer to the manual formore information
1). Structure Chart of theMS-8 Stereo Zoom Microscope
Note:ST-8/ST-8S/ST-8D: α =45°
1) Destaticization: stand, zoom tube, 10×eyepiece and auxiliary objective are all equipped with destaticization. It is very helpful for users to observe the specimen with static( such as semiconductor chip).When use this function,please connect the microscope to the ground through the joggle on the back of the stand.
2) Airproof Function: zoom tube and 10×eyepiece are both equipped with
airproof function, and this ensures the instrument work properly when the
humidity around is high.
3) Ergonomics design can make users feel comfortable after long-time
4) High definition, broad wide field of view, long-distence work. Various of
attachments can be added on this instrument. It can be widely used in such fields:
a. Can be used for training and education in school and research institute
b. Can be used for routine inspection in medical institution.
c. Can be used for assemblage, testing, measuring and quality control in
industry, especially in IT.
5) Kinds of optional attachments ( such as illumination, stand, eyepiece,
objectives and etc.)
1. Technology Parameter
Zoom Ratio: 1:6.3
Magnification Range: 0.8×-5× (ST-8/ST-8S ),
Interpupillary distance: 52mm-75mm
Technology of ST-8/ST-8S
ST-8/ST-8S Zoom Stereo Microscope Configuration ( Seeing the following table)
ST-8/ST-8S/ST-8D Zoom Tube
1 PCS for Each
Instruction & Certification
1 PCS for Each
LED Circular Illumination
10X Division Eyepiece
Reflected illumination ( Halogen )
0.4x reduce lense + CCD
0.4x reduce lens + intermediate lens + digital camera
Camera adapter + 2.5x photography eyepiece
Intermediate tube + 10x eyepiece + Nikon digital camera
2.0 USB cable
1) Assemblage of the Stage
Place the stand on a stable plane, insert the stage into the base, and tighten the fixing screw with wrench (small) attached at the back of the stand.
Note: The stage must be placed plane
2) Lifting of the FocusArm
The focus arm can be adjusted according to your special demands. Loosen the screw with the wrench ( big ), and the arm will 55mm lower than before after re-mounting the focus arm.
Note: Before tightening the screw, make sure that the 2 pins on the arm fit into the grooves on the vertical slider.
3) Mount the ZoomTube
Tighten the fixing screw of the zoom tube slightly to fix the zoom tube on the stand.
Warning: Do not tighten the screw too tight as this will make damage to the instrument.
4) Mount the Eyepiece
Rotate the eyepiece to 0, and insert the eyepiece into the tube completely till it touches the end of the tube.
Note: when inserting the 10x eyepiece, make sure to touch the end of tube.When inserting or extracting the eyepiece, please hold the cap instead of the diopter ring.
5) Wrenches are put at the Back of the Stand
6) Image Recording Instrument includes: digital camera, digital photography head, etc. To satisfy your special requirements, kinds of interface are supplied for your choosing, and this will make your operation and observation more convenient.
a. Assemblage of 0.4x reduce lens and the CCD
Take away the dust-cover of the trinocular, insert one end of the 0.4x reduce lens into the CCD and tighten it. Insert the other end into the trinocular port,Adjust the CCD, and tighten it.
b. Assemblage of the CameraAdapter and Digital Camera
Take away the dust-cover, insert the camera adapter into one end of the
intermediate lens. Insert 0.4x reduce lens into the other end of the intermediate lens, and tighten it.Adjust the camera, and tighten it.
Insert the power source into the socket of the transmitted base, connect the power source and turn on the switch.Adjust the brightness. It is not necessary to adjust the brightness to the strongest as this will reduce the life of the bulb.
2) Adjust the torque of focusing knob
Adjust the torque of the focus knob so that the zoom body will not fall down because of its own weight.
3) Interpupillary DistanceAdjusting
This adjustment should be performed every time if the observer changes since the interpuillary distance is different between individuals.Adjust the interpupillary distance so that the view field for each eye is merged into one.
Move while holding each tube with both hands.
a. Set the zooming knob to the highest magnification (5x), focus on the sample using the focus knob
b. Set the zooming knob to the lowest magnification (0.8x), look into the left eyepiece with your left eye, focus on the sample using the diopter ring on the left eyepiece. Then look into the right eyepiece with your right eye, and focus on the sample using the diopter ring on the right eyepiece.
c. Repeat Step a & b until the image is projected on the focus.
1) Check theWorking Distance
Working Distance is the distance between focus plane and zoom tube. The W.D For ST-8 series zoom stereo microscope is 115mm. Set the distance between the bottom of the zoom tube and specimen at 115mm, and this will be helpful to focus.
2) Focus on the Specimen
Turn the focusing knob both at the same direction to make the zoom tube move up and down. So that the focus will fall on the specimen.
Turn the zoom knob on both sides of the zoom tube to change the magnification of the specimen.
Zoom knob on right has the indication of the zooming magnification. Total
magnification can be calculated by multiplying the eyepiece magnification by the zooming body magnification.
Note:When auxiliary objective is attached, multiply its magnification as well.
Assemblage and usage of the attachments
1. Auxiliary Objective
Twist the auxiliary objective into the zoom body.Adjust the focus knob to a certain height.
Three kinds of illumination are available for your special needs: Transmitted light, Sideling light and LED Circuit light
200V-240V, 50/60Hz, 0.4A
Protective Earth 250V 7A
Pollution Degree: II
Installation Type: II
3. Installation of Illumination
1) Install the sideling illumination
Set the protrusion on the lamp house alight with the inside of the screw hole on the focus arm as shown. Secure it in place using mounting screw from outside.
2) Install LED circuit illumination
Insert the fixing screw into the groove of the zoom body and tighten it.
1. Working Environment
Temperature range is 0°C-40°C and the max. Humidity is 85%.Avoid high temperature and humidification.
Do not expose the microscope in the sun directly.
Place microscope on a stable plane and keep it in balance.Avoid violent vibration.
Keep the environment breezy and cover the microscope with the dust-cover.
2. Protect the microscope well
As microscope is a precision instrument, please avoid violent vibration. Improper using will make it unworkable.
3. Lens cleaning
Avoid dust and fingerprint on the lens as these will reduce its precision. Please clean as the following
1) Blow the dust with soot blower. Soft brush or gauze can also be used to remove the dust
2) More persistent dirt, such as fingerprints and oil, may be removed with soft cotton or lens tissue lightly moistened with absolute alcohol.As absolute alcohol are quite flammable, please take great care when using.
4. Cleaning of the painted or plastic parts
Avoid using organic solvents ( such as alcohol, ether, etc) to clean the painted or plastic parts of the instrument.We recommend the use of gauze.
More persistent dirt may be cleaned with mild detergent solution
When the microscope is not in use, cover it up with dust cover, and store in a dry place not subject to mold. Do not expose the microscope in the sun directly, avoid high temperature and humidification