Introduction
This manual provides detailed instructions for the safe and effective use of your AmScope M149C-2L-PB10-WM Compound Monocular Microscope. This instrument is designed for high-magnification observation of biological specimens and is suitable for educational and laboratory applications. Please read this manual thoroughly before operation.
What's Included
- AmScope M149C-2L microscope with plain stage
- WF10x eyepiece
- WF25x eyepiece
- 4x DIN achromatic objective
- 10x DIN achromatic objective
- 40x DIN achromatic objective
- (5) Blank slides
- (5) Prepared slides
- (2) Stage clips
- Dust cover
- 110V power adapter
- The World of the Microscope book
- Instructions
Key Features
- Heavy-duty compound microscope for biological and educational use.
- Monocular viewing head with 10x and 25x widefield eyepieces, fixed 45-degree vertical inclination, and 360-degree rotation capability.
- Forward-facing nosepiece with 4x, 10x, and 40x DIN achromatic full-glass objectives for high-resolution, color-corrected images.
- Brightfield, upper (reflected) and lower (transmitted) LED illumination.
- 0.65 NA single-lens condenser with disc diaphragm.
- Plain stage with stage clips.
- Coaxial coarse focus for ease of use.
- Powered by 110VAC adapter or three AA batteries.
Setup Instructions
- Unpacking: Carefully remove all components from the packaging. Place the microscope on a stable, level surface.
- Eyepiece Installation: Insert the desired eyepiece (WF10x or WF25x) into the top of the monocular head. Secure it gently.
- Power Connection: Connect the 110V power adapter to the microscope's power input and a suitable electrical outlet. Alternatively, install three AA batteries (sold separately) into the battery compartment located at the base.
- Dust Cover: Remove the dust cover before use and replace it after each use to protect the optics.

Image: Side view of the AmScope M149C-2L-PB10-WM microscope, illustrating the general assembly and power input location.
Operating Your Microscope
- Power On: Flip the power switch located at the base of the microscope to the 'ON' position. Adjust the illumination intensity using the dimmer control, if available.
- Prepare Specimen: Place a prepared slide or a specimen on a blank slide onto the plain stage, securing it with the stage clips.
- Select Objective: Rotate the revolving nosepiece to select the lowest power objective (4x) first. Ensure the objective clicks into place directly above the specimen.
- Focusing: While looking through the eyepiece, use the coarse focus knob to bring the specimen into approximate focus. Then, use the fine focus knob for precise focusing until the image is clear and sharp.
- Adjust Illumination: Adjust the disc diaphragm to control the amount of light passing through the specimen, optimizing contrast and clarity.
- Higher Magnification: Once focused at 4x, rotate the nosepiece to a higher power objective (10x or 40x). Re-adjust the fine focus and diaphragm as needed. Be cautious with the 40x objective to avoid contact with the slide.
- Upper Illumination (for opaque specimens): If observing opaque specimens, activate the upper LED illumination and adjust its angle for optimal viewing.

Image: Front view of the AmScope M149C-2L-PB10-WM microscope, highlighting the objective lenses, stage, and focus knobs.
Maintenance and Care
- Cleaning Optics: Use only specialized lens cleaning paper and solution for objective lenses and eyepieces. Avoid touching optical surfaces with bare hands.
- Cleaning Body: Wipe the microscope body with a soft, damp cloth. Do not use harsh chemicals or solvents.
- Storage: Always cover the microscope with the provided dust cover when not in use. Store in a dry, dust-free environment away from direct sunlight and extreme temperatures.
- Handling: Carry the microscope by its arm and base. Avoid sudden movements or impacts.
Troubleshooting Guide
| Problem | Possible Cause | Solution |
|---|---|---|
| No image visible | Power off; Objective not clicked into place; Diaphragm closed; Eyepiece not inserted correctly | Ensure power is on; Rotate nosepiece until objective clicks; Open diaphragm; Reinsert eyepiece securely |
| Image is blurry | Incorrect focus; Dirty optics; Wrong objective selected | Adjust coarse and fine focus; Clean lenses; Start with lowest power objective |
| Insufficient illumination | Power off; LED burnt out; Batteries low | Check power connection/batteries; Contact support if LED is faulty |
| Dust or spots in view | Dirty eyepiece or objective lens; Dust on slide | Clean eyepiece/objective; Clean slide |
Technical Specifications
| Feature | Detail |
|---|---|
| Light Source Type | LED |
| Material | Metal |
| Real Angle of View | 45 degrees |
| Magnification Maximum | 1000 x |
| Brand | AmScope |
| Objective Lens Description | Achromatic |
| Power Source | Battery Powered (or 110V AC adapter) |
| Unit Count | 1 Count |
| Number of Items | 1 |
| UPC | 608729745723 |
| Enclosure Material | Metal |
| Global Trade Identification Number | 00608729745723 |
| Manufacturer | United Scope LLC. |
| Model Number | M149C-2L-PB10-WM |
| Manufacturer Part Number | M149C-2L-PB10-WM |
| ASIN | B00AZON71K |
Warranty Information
AmScope products typically come with a manufacturer's warranty. For specific details regarding the warranty period and coverage for your M149C-2L-PB10-WM microscope, please refer to the warranty card included with your product or visit the official AmScope website. Keep your purchase receipt as proof of purchase.
Customer Support
For technical assistance, parts, or service, please contact AmScope customer support. You can find contact information on the official AmScope website or through your retailer. Please have your model number (M149C-2L-PB10-WM) and purchase date available when contacting support.