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Quartz Slides

UV-transparent fused silica object carriers for microscopy

Special Properties

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

Typical Applications

  • Slides for scientific microscopy
  • Specimen slides for medical laboratories
  • Analytics and biotechnology
  • Scientific UV and DUV microscopy
  • Low loss and low absorption coverslips
  • High-temperature microscope stages
  • Sample storage solutions
  • Chemically resistant slides
  • UV transmissive and inert coverslips
  • Ultraviolet microscopy equipment
  • Slides for medical and cell research
  • Coverslips for UV spectroscopy

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Quartz microscope slideWe manufacture and supply quartz microscope slides made of optical-grade, high-purity synthetic fused silica. Unlike conventional quartz slides made from lower-grade natural fused quartz, our UV-transparent silicon dioxide object carriers are made from amorphous, optical-grade fused silica, commonly used for advanced optics. As a result, our quartz slides have significantly higher transmission for lower UV wavelengths than fused quartz slides and offer much better optical quality. The surfaces of our quartz glass slides are optically polished on both sides. They offer more than 80% light transmission even at the very low UV wavelength of 185 nm, whereas conventional fused quartz slides typically only transmit less than 50%. Excellent purity minimizes absorption losses in the deep ultraviolet wavelength range to a minimum, enabling specialized scientific applications in DUV microscopy.

Our quartz microscope slides have 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 will 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 used in science (see table). As a manufacturing company, we can produce almost any shape and size and are not limited to these common dimensions. Therefore, we can always provide a solution if you need round quartz plates, cover glasses, square cover slips, or other quartz components.

Our lead times for custom sized quartz glass slides are as fast as for the listed sizes. In addition, our 48-hour express service is possible for any thickness in the chart. This unique option allows custom-sized quartz 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 bench in no time, allowing you to get back to your project or day-to-day business without delay.


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


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UV transmittance of our synthetic quartz
microscope slides

View transmittance of our quartz microscope slide materials (click to enlarge)
Zoom in on the graph to see more details.

UV Transmission

  • T > 80% at 185 nm

Synthetic Quartz Slides
Common dimensions

Click on a thickness to get a quote:




in inches

Slide Thickness


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

Custom thicknesses are available upon request.

The bold numbers represent the science lab's most common microscope slide standards. However, if smaller slide sizes also work in your equipment, please note that these sizes can significantly lower the unit price compared to the standard quartz slide sizes. For example, the price of a 23mm × 66mm × 1mm slide is significantly less than a 25mm × 75mm × 1mm slide. Other products such as round plates, custom shapes, and coverslips are available. Please send us your inquiry.

Quickly available thicknesses

Please click on glass thickness to get a quote:

Thickness (mm)


48h-Express Service
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 service.

Refractive Index

  • nd = 1.4585


  • 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 products 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 respond promptly.


All given details and specifications are mean reference values and are not guaranteed. Also, please consider the "Notes on specifications".

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Last update: May 21, 24