Round Cover Glass
Choose circular coverslips in diameters from 8 mm to 22 mm. We can supply soda lime, super white or borosilicate 3.3 glass with standard thickness options.
HUIDA Microscope Cover Glass
Round, Square & Rectangular Cover Glass for Your Laboratory
Choose the cover glass shape, material, size and thickness that fits your microscopy workflow. We supply circular coverslips, 22×22 mm cover glass, 24×50 mm rectangular cover glass and other standard dimensions for laboratories, distributors and private-label projects.
- Round diameters from 8 to 22 mm
- Square and rectangular sizes to 24×60 mm
- No.0, No.1, No.1.5 and No.2 thicknesses
- Soda lime, super white and borosilicate 3.3
20+ YearsLaboratory consumables manufacturing
3 FactoriesMedical, plastic and glass production
50+ PatentsProduct and process development
ISO SystemsStandardized quality management
Choose by shape
Find the Cover Glass That Matches Your Slide and Specimen
You can source round cover slips for circular chambers or select square and rectangular cover glass for routine microscopy, histology and automated coverslipping.
Square & Rectangular Cover Glass
Select standard square formats such as 22×22 mm or longer rectangular formats including 24×50 mm and 24×60 mm.
You're probably looking for...
22×22 mm, 24×50 mm and Circular Cover Glass
Tell us your exact size and thickness. We will match it to the available material and packing configuration before quoting.
Square Cover Glass
A standard square format available across our soda lime, super white and borosilicate 3.3 product families.
Rectangular Cover Glass
A longer rectangular format supplied in standard thickness grades and several box or vacuum-pack configurations.
Circular Coverslips
Round cover slips are packed 100 pieces per hinged box and available in ten listed diameters.
Choose by material
Match the Glass Material to Your Workflow
You do not need to guess. Share your microscope, coverslipping method and experimental conditions, and our team will help you compare the three material families.
Soda Lime Glass
A practical choice for conventional manual slide sealing and compatible automatic coverslipping workflows.
- Good light transmittance
- Standard and customized specifications
- Round, square and rectangular options
Super White Glass
Choose super white glass when you need more consistent flatness, uniform dimensions and better light transmittance.
- Uniform flatness and sizes
- Manual or automatic coverslipping
- Standard and customized thicknesses
Borosilicate 3.3 Glass
Use borosilicate 3.3 when your process requires higher toughness, thermal-shock resistance and stronger acid or alkali resistance.
- Lower thermal expansion
- High transparency and toughness
- Suitable for automatic coverslippers
Not Sure Which Material You Need?
Send us your application, shape, size and annual volume. We will help you narrow down the suitable cover glass before you place an order.
Dimensions & thickness
Cover Glass Specifications
Use the tables below to identify your basic specification. For a quotation, include the shape, dimension, material, thickness grade, packing and quantity.
Square and Rectangular Sizes
18×18 mm20×20 mm22×22 mm24×24 mm24×32 mm24×40 mm24×50 mm24×60 mm
Round Diameters
Ø8 mmØ9 mmØ10 mmØ11 mmØ12 mmØ14 mmØ16 mmØ18 mmØ20 mmØ22 mm
Thickness Grades
| Thickness Grade | Thickness Range | Available Shapes |
|---|---|---|
| No.0 | 0.09–0.13 mm | Round, square and rectangular |
| No.1 | 0.13–0.16 mm | Round, square and rectangular |
| No.1.5 | 0.16–0.19 mm | Round, square and rectangular |
| No.2 | 0.19–0.23 mm | Round, square and rectangular |
Custom thickness or dimensions should be confirmed with our export team before ordering.
Packing options
Choose Packing for Distribution, Laboratory Use or Private Label
Our square and rectangular cover glass is available in several box and vacuum-pack formats. Circular cover glass is supplied in hinged boxes containing 100 pieces.
Two-part box, 100 pcs/box, 10 boxes per vacuum pack.
Hinged box, 100 or 200 pcs/box, 5 boxes per vacuum pack.
Hinged box, individually vacuum packed, 10 boxes per dispenser box.
Packed by weight in 1 oz or 2 oz hinged boxes.
Outside-buckled hinged-lid box with 100 or 200 pieces.
For 24×32 mm through 24×60 mm rectangular sizes, 100 pcs/box is the standard listed piece-count option in the hinged-box configurations. Ask us to confirm your exact pack.
Applications
Cover Glass for Routine and Specialized Microscopy
You can match the shape and material to your laboratory process instead of buying a one-size-fits-all coverslip.
Routine Microscopy
Square and rectangular cover glass for routine specimen mounting and observation.
Histology & Pathology
Standard sizes for manual slide sealing and compatible automated coverslipping workflows.
Circular Chambers
Round coverslips from 8 mm to 22 mm for chamber, culture and circular mounting requirements.
Demanding Experiments
Borosilicate 3.3 options where thermal shock or chemical resistance is more important.
Manufactured by HUIDA
A Cover Glass Supplier Built for Long-Term Bulk Supply
We manufacture laboratory and medical consumables for customers in international markets. Our group operates three factories, including production focused on microscope slides and cover glass.
You can work with us for standard cover glass supply, OEM or ODM projects, customized specifications and private-label packaging. Our standardized workshops, R&D resources and management systems support repeat orders and distributor programs.
Nearly 50,000 m²Standardized workshop area
50+ PatentsInventions and utility models
ISO 9001 / 13485Quality management certifications
ERP & MESStandardized production management
Get an accurate quotation
Send These Details to Our Export Team
The more detail you provide, the faster we can confirm the correct cover glass and packing.
- 1Shape: round, square or rectangular
- 2Size or diameter, such as 22×22 mm, 24×50 mm or Ø14 mm
- 3Material and thickness grade
- 4Packing, quantity and destination country or port
Frequently asked questions
Cover Glass Buying Questions
Do you supply both round and rectangular cover glass?
Yes. We supply circular cover glass in 8–22 mm diameters and square or rectangular cover glass from 18×18 mm through 24×60 mm.
Can you supply cover glass 22×22 mm and 24×50 mm?
Yes. Both 22×22 mm and 24×50 mm are listed standard sizes. Tell us the material, thickness, packing and required quantity so we can quote the correct version.
Which cover glass material should I choose?
Soda lime glass is suitable for routine workflows, super white glass offers better light transmittance and uniformity, and borosilicate 3.3 is designed for more demanding thermal or chemical conditions. Share your application and we will help you compare them.
What thicknesses are available?
The standard listed grades are No.0 at 0.09–0.13 mm, No.1 at 0.13–0.16 mm, No.1.5 at 0.16–0.19 mm and No.2 at 0.19–0.23 mm.
How are circular coverslips packed?
Round cover glass is listed in hinged boxes containing 100 pieces. Contact us for outer-carton details and your required diameter.
Can HUIDA provide customized specifications or private-label packing?
We support OEM and ODM projects, including customized product specifications and packaging. Final feasibility, minimum quantity and lead time depend on your design and order volume.