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Marienfeld Superior™ Cover Glass

D 263® M Cover Glass for Microscopy

D 263®M is a clear borosilicate glass that is produced by a draw-down method. This permits the production of very thin glass thicknesses between 0.10 and 0.21 mm.

D 263®M is used as cover glass for microscopic analyses and complies to all requirements of ISO 8255-1. Its low autofluorescence and high chemical resistance are preconditions for reliable research results.

Due to the protective coating and outstanding quality of material it is easily separable, and therefore well-suited for automated cover slipping.

Applications: Light and fluorescence microscopy, especially in medical and biological science.

Features

  • High spectral transmission
  • Refractive index optimized for microscopes
  • Virtually colorless
  • Low autofluorescence
  • Excellent optical and cosmetic qualities
  • Good chemical resistance to environmental conditions
  • Long durability in archived samples
  • Low flatness deviations
  • Complies precisely with set thickness tolerances
  • Low alkali content enables cell growth
  • Good wettability on both glass surfaces
  • Protective coating facilitates automated glass separation in coverslippers

Specifications

Light Transmission T vD65 (d= 0.15 mm) 91.7%
Coefficient of Mean Linear Thermal Expansion
α (20 °C, 300°C)(static measurement)		 2.2 • 10-6 K-1
Transformation Temperature Tg 557°C
Dielectric Constant εr at 1 MHz 6.7
Refractive Index no 1.5230
Refractive Index ne 1.5255
Abbe Value ve 55
Density ρ (annealed at 40°C/h) 2.51 g/cm3
Supplier: Marienfeld Superior™
Pack: Each
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