
Discover the brilliance of microscopic exploration with our powerful multifunctional composite microscope, meticulously designed to unveil the smallest details of sample slides. Perfectly crafted for clinical doctors, ambitious high school and university science students, and passionate hobbyists eager to explore the microcosm.
Indulge in professional-grade optics with our Siedentopf binocular telescope lens, engineered for full 360-degree rotation. Experience unparalleled viewing with interchangeable wide-field 10X and 25X glass eyepieces, ergonomically tilted at a comfortable 30 degrees to alleviate neck strain and effortlessly adapt to varying pupil distances while ensuring uninterrupted focus.
Unlock the power of precision with our four DIN achromatic objectives, expertly installed in the rotating turret to deliver an impressive six levels of magnification: 40X, 100X, 250X, 400X, 1000X, and an astonishing 2500X, bringing every minute detail into stunning clarity.
Illuminate your specimens with brilliant clarity using bright LED bulbs and a manually adjustable Abbe condenser, casting light from below with customizable brightness. The double-layer mechanical stage, featuring a generous surface area and a safety-optimized sliding bracket, ensures seamless slide presentation and viewing.
Our conveniently designed handle ensures easy portability, allowing you to carry this robust microscope wherever your research takes you.
Quality Assurance: Entrusted by leading global microscope manufacturers, recognized educators, pioneering researchers, and esteemed clinical doctors, our microscopes consistently deliver exceptional performance.
Model |
SW350B |
Head |
360° rotatable binocular Siedentopf |
Inclination |
30° |
Eyepieces |
Wide-field 10X and 25X pairs |
Interpupillary distance |
48-75mm |
Diopter adjustment |
On left tube, +/-5dp |
Nosepiece |
Quadruple revolving |
Objectives |
Achromatic 4X, NA 0.1, working distance 37.5mm 10X, NA 0.25, working distance 7.35mm 40X(Spring), NA 0.65, working distance 0.29mm 100X (Spring, Oil), NA 1.25, working distance 0.18mm |
Magnifications |
40X, 100X, 250X, 400X, 1000X and 2500X |
Stage |
Double-layered mechanical stage with slide holder |
Stage size |
130mmx130mm |
Stage X-Y range |
70mmx30mm |
Upper limit stop |
Rack stop preset but adjustable |
Condenser |
NA 1.25 with iris diaphragm, swing-in and swing-out filter holder |
Focusing |
Coaxial coarse and fine focusing system |
Illumination |
Built-in 1W LED transmitted illumination with intensity control |
Power |
110-240V AC adapter (included) |




Assembly and set up
Begin your exploration journey by carefully removing the microscope from its packaging and placing it securely on a sturdy, flat surface, ensuring stability for precise operation. Detach the plastic covers safeguarding the eyepiece holders on the microscope's head, then gracefully insert the eyepieces into their respective holders to prepare for a seamless viewing experience. At your discretion, insert the eyepiece adapter into the trinocular camera port atop the microscope. Opt for a third eyepiece for expanded viewing or enhance your setup with an eyepiece camera (not included). Locate the power adapter, securely connect it to the microscope, and plug it in. Activate the microscope by pressing the power button discreetly located on the back of the base.
Using the microscope
Initiate your session by powering on the microscope and utilizing the illumination intensity control wheel to set the lamp at the lowest brightness, perfectly preparing for a comfortable observation.
Secure your slide in place by clipping it into the slide holder on the stage, laying the groundwork for an unparalleled viewing experience. Employ the X-Y translational control knobs conveniently located on the right side of the stage to maneuver the stage front to back or the slide holder left to right, ensuring the specimen is precisely centered over the bulb.
Achieve perfect visual alignment by adjusting the binocular eyepieces until a single, clear image graces your view through them. Tailor the bulb's brightness to your personal preference using the dimmer wheel, crafting an optimal illumination setting for your viewing comfort.
Begin your examination with the lowest power objective lens-the 4X objective-meticulously centered over the stage to lay the foundation for detailed exploration. Peer through the eyepieces and gradually bring the image into sharp focus by gently turning the larger coarse adjustment focus knob, moving the stage closer to the objective. With an initial image formed, transition smoothly to the blue fine adjustment focus knob to enhance clarity further, revealing intricate layers of the specimen under scrutiny. Utilize the diopter adjustment control on the eyepiece holder to achieve additional image refinement, ensuring clarity meets precision. Explore other fascinating sections of the slide by manipulating the X-Y translational control knobs to navigate the slide holder, maintaining focus on your specimen.
Elevate your exploration by rotating the nosepiece clockwise to a higher magnification objective, carefully avoiding contact with the slide to preserve both glass and objective integrity. If the objective encounters resistance when moving into place, use the coarse focus knob to create space by gently lowering the stage, safeguarding both slide and lens.
Adjust the focusing ring on the iris aperture diaphragm for image resolution refinement, enhancing your observational clarity. Effortlessly adjust the condenser position by rotating the metal knob, bringing it closer or farther from the stage for optimal light focus and image clarity.
For the ultimate in high-magnification observation, apply the included immersion oil with the 100X objective for unparalleled detail and precision. Expertly rotate the nosepiece, ensuring the 100X objective lens is perfectly positioned near, but not touching, the specimen slide for optimal observation. Next, expertly apply a drop of the premium-grade immersion oil onto the cover slip, enhancing your view. Carefully rotate the 100X objective lens into its optimal position, ensuring it meets the immersion oil precisely for maximum clarity. Adjust the focus meticulously until your specimen is brought into sharp and vivid clarity. (Note: After each use, immediately and gently cleanse the oil from the objective lens and the cover slip using lens paper moistened with ethyl or isopropyl alcohol. Avoid using immersion oil with the 4X, 10X, or 40X objectives to maintain their pristine condition.)
The sophisticated swing-in and swing-out filter holder is conveniently located at the base of the advanced Abbe condenser. To enhance your observation, swing it out and place a pristine 32mm diameter filter within, taking meticulous care to avoid any dust, dirt, or fingerprints on the delicate filter and field lens.
Exclusive Warranty Information and Premium Customer Support
Our state-of-the-art microscopes adhere to the rigorous ISO 9001 standards, ensuring superior quality and precision. Our warranty offerings include the following comprehensive coverage:
Five (5) Year Warranty for Microscopes: Each microscope boasts a robust five (5) year warranty against any manufacturing defects, ensuring your investment is safeguarded. This warranty does not include coverage for normal wear, routine maintenance, add-on accessories, or any damage resulting from unauthorized repairs, accidents, alterations, shipping mishaps, misuse, or abuse.
One (1) Year Warranty is dedicated to Electrical and Video components, providing you peace of mind for these critical elements. Please note, coverage does not extend to consumables such as light bulbs, batteries, fuses, or electrical cords.
All warranties initiate from the original purchase date, ensuring timely protection from the start. We proudly offer complimentary repair or
replacement of warrantied components, inclusive of labor, during the warranty period, ensuring seamless service.
Proof of original purchase is essential to activate your warranty benefits. Buyers are responsible for coordinating shipping logistics to and from
our facility for any necessary warranty services. Please note, our warranty does not extend to damages incurred
from standard wear, misuse, or repairs conducted by unauthorized parties.
Disclaimer: As we continually strive to enhance our instruments in response to valued customer feedback, occasional modifications to mechanical structures and optical designs occur. Thus, there may be slight variations between this manual's descriptions, illustrations, and the actual microscope received.

Q1: How can I identify the ideal model for my specific application?
By sharing a few key details with our team, we can devise a bespoke solution tailored to your unique requirements. Additionally, submit your specimen to us, and our expert engineers will conduct an exhaustive proofing evaluation to guarantee perfect compatibility.
1) Kindly specify the exact product you have envisioned. Detailed specifications will empower us to provide an accurate recommendation precisely aligned with your needs.
2) What is your current production process? This data will enable us to refine our suggestions to better complement your operational requirements.
3) Share your projected budget and delivery timeline with us, allowing us to tailor our offerings to align with your specific expectations and needs.
Q2: I've just received my Educational Microscope with Rotatable Binocular, but I'm unsure how to operate it. What should I do next?
Have no worry, as we provide a comprehensive instructional video detailing every aspect of installation and operation, accompanied by a thorough English manual. For additional inquiries, our highly skilled English-speaking engineers are readily available for online support. Furthermore, we offer localized support in select countries such as India, Malaysia, Korea, and Spain, with exciting plans for global expansion.
Q3: What steps should I take if my microscope encounters an issue?
Rest assured, the exceptional quality of our product is backed by a comprehensive 12-month warranty. During this period, if any components are found defective without human-induced damage, we will promptly send replacement parts to you. Beyond the warranty, we provide lifelong complimentary online support. For parts replacement, we facilitate a straightforward ordering process to ensure uninterrupted service.