Quartz Slides

Special Properties

• Made from synthetic fused silica
• UV transmission of more than 80% at 185 nm
• Much higher purity and inner quality than conventional slides made of fused quartz
• Optics-grade polishing finish
• Low microroughness
• Excellent flatness
• High transparency and crystal-clear appearance
• Low absorption
• High chemical resistance
• Heat-resistant up to 1000 °C

Typical Applications

• Slides for scientific microscopy
• Object carriers for medical laboratories
• Analytics and biotechnology
• Scientific UV and DUV examinations
• High-temperature microscope stages
• Sample storage solutions
• Chemically resistant slides and cover glasses
• UV-transmissive coverslips
• Ultraviolet microscopy equipment
• Slides for medical and cell research
• Coverslips for UV spectroscopy

Related Websites

• Synthetic Quartz
• Fused Quartz (sight glass grade)
• Quartz Glass FAQ
  (Frequently Asked Questions about Quartz Glass Grades and a Guide to Material Selection)

 

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We manufacture and supply quartz microscope slides and coverslips made of synthetic fused silica. Unlike conventional lower-quality fused quartz slides, our UV-transparent silicon dioxide object carriers are made from quartz glass commonly used for advanced optics. As a result, our quartz slides feature significantly higher transparency for lower UV wavelengths and provide much better optical quality. The surfaces of our quartz glass slides are optically polished on both sides. Already at a very low wavelength of 185 nm they transmit more than 80% of light, whereas conventional slides typically only allow less than 50% transmission at this wavelength. The excellent material purity of the synthetic quartz we use minimizes absorption losses in the deep ultraviolet wavelength range to a minimum, enabling specialized scientific applications in DUV microscopy.

Our quartz microscope slides feature the typical flatness and surface quality known from optics. They also offer the exceptionally high chemical resistance of amorphous quartz, enabling contamination-free sample storage solutions for the laboratory. No substances or chemicals can leach from the inert microscope slide or coverslip into the sample, which is essential for many demanding microscopy applications in medical cell research, analytics, biotechnology, life sciences, and laboratory specimen storage.

Präzisions Glas & Optik GmbH supplies all standard sizes of microscope slides and coverslips used in science (see table). Furthermore, we are not limited to these common dimensions and shapes. Our lead times for individually sized quartz glass slides are as short as for the listed sizes. In addition, our 48-hour express option is possible for any thickness in the chart. This unique option allows individually sized slides to be manufactured and shipped within two working days after receipt of your order, provided that no further complex manufacturing steps are required. When you order through our 48-hour express services, you can have your customized microscope slides on your lab desk in no time.

Please use the button below or select a thickness from the table to send an RFQ for any size quartz microscope slide.

 

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48-hour express manufacturing

Specifications

Synthetic quartz microscope slides
UV transmittance

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UV Transmission

• T > 80% at 185 nm
  

Quartz Slides & Coverslips
Common dimensions

Click on a thickness to get a quote:
Dimensions (mm)	Dimensions (in)	Slide Thickness (mm)
10 × 10	0.4 × 0.4	0,175 | 0,30 | 0,50 | 1,00
19 × 19	0.75 × 0.75
23 × 23	0.9 × 0.9
23 × 46	0.9 × 1.8
23 × 66	0.9 × 2.6
23 × 75	0.9 × 3.0
25 × 25	1 × 1
25 × 46	1 × 1.8
25 × 50	1 × 2
25 × 66	1 × 2.6
25 × 75	1 × 3
46 × 66	1.8 × 2.6
50 × 75	2 × 3
70 × 70	2.75 × 2.75
Other thicknesses are possible upon request.
The bold dimensions represent the science lab's most common microscope slide and cover slip sizes. However, if smaller slide dimensions also work with your equipment, please note that these can significantly lower the unit price compared to the larger standard quartz slide sizes. For example, the price of a 23mm × 66mm × 1mm slide is significantly lower than for a 25mm × 75mm × 1mm slide. Other parts, such as round plates, customized shapes, and cover slips, are available. Please send us your inquiry.

Quickly available thicknesses

Please click on glass thickness to get a quote:

Thickness (mm)	Tolerance
0.175	±0.020	✔
0.30	±0.050	✔
0.30	±0.025	✔
0.50	±0.05	✔
0.50	±0.03	✔
0.50	±0.025	✔
1.00	±0.10	✔
1.00	±0.025	✔
1.10	±0.10	✔
2.00	±0.15	✔
3.00	±0.20	✔
3.00	±0.025	✔
Thicknesses marked with "✔" can be ordered with our 48-hour express option.

Refractive Index

• n_d = 1.4585

Density

• 2.20 g/cm³

Coefficient of Thermal Expansion

• ca. 0.57 × 10^-6/K

Maximum Operating Temperature

• ca. 1000 °C

Surface Quality

• 60-40 scratch & dig (MIL-0-13830A)

Note: In addition to the microscope slides commonly used in the laboratory described on this website, our company also supplies slides made of various other materials from our extensive product line. If you are looking for special microscope slides or coverslips or need additional support, please contact us with your requirements. Our engineers will be happy to support you.

 

All data and specs given are average guide values and are not guaranteed. Moreover, please consider the “Notes on Specifications”.

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Last update: August 19, 2025