20X Biological 23.2mm Microscope Eyepiece
The 20X Biological 23.2mm Microscope Eyepiece is an achromatic eyepiece with a 20X magnification and a 23.2mm outer diameter. It fits most standard biological microscopes with DIN/JIS compatibility.

Product Overview
The 20X Biological 23.2mm Microscope Eyepiece is an achromatic eyepiece with a 20X magnification and a 23.2mm outer diameter. It fits most standard biological microscopes with DIN/JIS compatibility. It provides increased magnification and clarity without replacing the entire microscope, making it a cost-effective upgrade for routine inspection and teaching tasks.
- Magnification20X
- Optical designAchromatic
- Mounting size23.2mm (diameter)
- StandardDIN/JIS
- CompatibilityMost standard biological microscopes
- ConditionBrand new
Key Benefits
- 20X magnification extends the total system magnification for finer detail observation
- 23.2mm outer diameter ensures compatibility with most standard biological microscopes
- Achromatic design reduces chromatic aberration for clearer, more accurate imaging
- DIN/JIS standard size allows direct replacement in existing microscope setups
- Low-cost upgrade to improve inspection resolution without purchasing a new microscope
Application Scenarios
- Increasing magnification for detailed inspection of cell structures in a teaching lab
- Improving visibility of fine features during routine histology or pathology slide examination
- Upgrading a standard biological microscope for use in a quality control lab without changing the base instrument
- Replacing a worn or damaged eyepiece in a shared laboratory microscope
- Supporting student observation in a classroom setting with consistent, high-contrast imaging
Who It Is For
- Teaching and research laboratories in universities and schools
- Clinical and veterinary pathology labs performing routine slide analysis
- Quality control departments inspecting biological samples or materials under a microscope
- Microscopy technicians maintaining or upgrading existing equipment
- Educational institutions needing affordable, interchangeable eyepieces for multiple microscopes
Problems It Solves
- A low-magnification eyepiece limits the ability to see fine cellular or structural details
- Replacing an entire microscope to gain higher magnification is costly and unnecessary
- Non-standard eyepieces may not fit existing microscopes, causing delays in setup
- Chromatic aberration in lower-quality eyepieces reduces image clarity and accuracy
- Lack of spare eyepieces in a lab leads to downtime when one is lost or damaged
Technical Features
- Achromatic optical design to reduce color fringing
- 20X magnification for increased detail in biological samples
- 23.2mm outer diameter for DIN/JIS standard compatibility
- Standard size fits most common biological microscopes
- New, unused component with consistent optical performance
Specifications
| Magnification | 20X |
|---|---|
| Optical design | Achromatic |
| Mounting size | 23.2mm (diameter) |
| Standard | DIN/JIS |
| Compatibility | Most standard biological microscopes |
| Condition | Brand new |
| Application | Biological microscopy |
Specifications are taken from the AMADA product data for this item. Confirm critical dimensions with us in writing before ordering.
Comparison With Other Options
| 10X biological eyepiece | The 20X eyepiece doubles the magnification, allowing finer detail observation without changing the objective lens or microscope body. |
|---|---|
| 15X biological eyepiece | The 20X provides 33% higher magnification than a 15X, improving resolution for detailed biological analysis. |
| Non-standard or custom eyepiece | The 23.2mm DIN/JIS standard size ensures fit across multiple microscope models, avoiding compatibility issues. |
Use Guide
- Ensure the microscope objective is properly aligned before inserting the eyepiece
- Insert the eyepiece gently into the head tube until it clicks into place
- Adjust the interpupillary distance and focus using the microscope's coarse and fine focus controls
- Clean the lens surface with a soft lens cloth before use to avoid dust or smudges
- Store unused eyepieces in a protective case to prevent scratches or damage
More From Microscope Eyepiece

12.5X Microscope Metal Mobile Phone Holder
View Details
3X Biological 23.2mm Microscope Eyepiece
View Details
2X Biological 23.2mm Microscope Eyepiece
View Details
25X Biological 23.2mm Microscope Eyepiece
View Details
16X Biological Microscope Eyepiece Dia 23.2mm
View Details
10X/18mm Biological Microscope Eyepiece
View Details
10X/16mm Biological Microscope Eyepiece
View DetailsFrequently Asked Questions
What is the magnification of this eyepiece?
20X. This increases the total magnification when used with an objective lens.
What is the outer diameter of the eyepiece?
23.2mm. This matches the DIN/JIS standard for most biological microscopes.
Is this eyepiece compatible with my microscope?
Yes, if your microscope uses a standard DIN/JIS eyepiece tube with a 23.2mm outer diameter.
Can I use this with a stereo or metallurgical microscope?
It is designed for biological microscopes. Check the tube diameter and standard of your instrument before use.
Does this eyepiece have a built-in diaphragm or focus adjustment?
No. It is a fixed-focus, standard eyepiece with no internal adjustments.
Is this eyepiece suitable for photography or digital imaging?
Yes, it can be used with a camera adapter, but image quality depends on the camera and adapter used.
Request A Price On The 20X Biological 23.2mm Microscope Eyepiece
Send quantity, destination and the application. We will confirm the configuration, the price and the lead time.