Coverslips
SCHOTT NEXTERION® Thin Glass Substrates for Microarraying and High Resolution Imaging Applications
To address these issues SCHOTT offers high-performance "cleaned and inspected" NEXTERION®coverslips. A special high performance thin borosilicate glass that has a guaranteed thickness variation of less than plus-minus five microns, was developed in collaboration with Carl Zeiss. NEXTERION® coverslips made with this colorless borosilicate glass are available with, or without functionalised coatings.
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Product Details
High Quality Glass direct from the Manufacturer
The thin glass substrates are manufactured from SCHOTT’s D 263™ M cover glass. This is a colorless low alkali borosilicate glass with a very low iron content. D 263 M meets the requirements laid down in ISO 8255.
The outstanding features of D 263™ M include:
The outstanding features of D 263™ M include:
- High spectral transmission and optically clear
- Excellent internal glass quality with absence of inclusions, striae, bubbles, streaks, etc.
- Excellent flatness and very good surface quality
- Low background fluorescence
- Refractive index of 1.5255 +/- 0.0015 optimized for microscope objectives
- Abbe number of 56 +/- 2
- Excellent resistance to chemical attack (hydrolytic class ISO 719-HGB 1)
- Non-neurotoxic and non-cytotoxic
Tight Thickness Tolerances
For high resolution imaging applications, coverslips often have to be hand seleced for the required 170nm thickness to optimize image quality. To avoid this tedious process and to ensure consistent and reproducible image quality, SCHOTT now offers high performance NEXTERION® coverslips with a thickness of 170 microns +/- 5 microns. These are ISO 8255 compliant Type1½ H as per ISO 8255-1 with restricted thickness-related tolerance.
Dimensions and Formats
SCHOTT NEXTERION® coverslips are available in both “High performance” and “Standard” glass thickness tolerances:
“High performance” coverslips #1.5H
Thickness: 170 microns +/- 5 microns
18 x 18 mm coverslips
22 x 22 mm coverslips
24 x 60 mm coverslips
25 x 65 mm coverslips
25 x 75 mm coverslips
Other dimensions are available to special order
"Standard” coverslips #1.5
Thickness: 175 microns +/- 15 microns
22 x 22 mm coverslips
24 x 24 mm coverslips
24 x 60 mm coverslips
Other dimensions and standard coverslip glass thicknesses (#0, #1, #2 etc.) are available on request
“High performance” coverslips #1.5H
Thickness: 170 microns +/- 5 microns
18 x 18 mm coverslips
22 x 22 mm coverslips
24 x 60 mm coverslips
25 x 65 mm coverslips
25 x 75 mm coverslips
Other dimensions are available to special order
"Standard” coverslips #1.5
Thickness: 175 microns +/- 15 microns
22 x 22 mm coverslips
24 x 24 mm coverslips
24 x 60 mm coverslips
Other dimensions and standard coverslip glass thicknesses (#0, #1, #2 etc.) are available on request
Cleaning
The coverslips are cleaned under class 100 clean room conditions using a highly efficient multi-step, ultrasonic cleaning method, that removes glass debris and surface contaminates. This avoids the time-consuming and cost-intensive procedures normally associated with coverslip preparation. NEXTERION®coverslips give you more time to get on with your research work.
Packaging
Guaranteed Surface Quality
Standard coverslips are packed surface-to-surface; this often causes scratching of the glass. NEXTERION®coverslips are cleaned, visually checked and individually packed into custom made packaging.
Special NEXTERION® packaging

Uncoated Coverslips
The coverslips can be supplied as uncoated glass that has been cleaned and is ready to use.
Coated Coverslips
Any of the standard NEXTERION® functional coatings can be applied to coverslip glass in just about any size.
The coatings include:
The coatings include:
- Aminosilane
- Aldehydesilane
- Epoxysilane
- 3-D thin film polymer-NHS ester
- Nitrocellulose
Custom Coatings
SCHOTT Microarray Solutions is also able to coat glass coverslips with coating chemistries developed by clients. If you cannot find the format or coating you are looking for, please inquire about our NEXTERION®
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