Questions? 800-523-5874 | [email protected]

You have no items in your shopping cart.

Search Products, COA, SDS, and Technical Data

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
71861-001.jpg
71861-001.jpg 71861-001a.jpg 71861-009.jpg 71861-022.jpg 71861-029.jpg 71861-031-C.jpg 71861-045.jpg 71861-048.jpg
Square Two-part plastic boxes containing 100 pieces.
Cat # Description Pack Price Quote Quantity
Cat #: 71861-001 Description: No 1, 0.13-0.16mm Square & Rectangular, 12 x 12 mm Pack: 100 Pack Price: $31.50 Add to Quote:
Cat #: 71861-001-C Description: No 1, 0.13-0.16mm Square & Rectangular, 12 x 12 mm Pack: 1000 Case Price: $305.00 Add to Quote:
Cat #: 71861-002 Description: No 1, 0.13-0.16mm Square & Rectangular, 15 x 15 mm Pack: 100 Pack Price: $30.50 Add to Quote:
Cat #: 71861-002-C Description: No 1, 0.13-0.16mm Square & Rectangular, 15 x 15 mm Pack: 1000 Case Price: $292.00 Add to Quote:
Cat #: 71861-003 Description: No 1, 0.13-0.16mm Square & Rectangular, 16 x 16 mm Pack: 100 Pack Price: $30.50 Add to Quote:
Cat #: 71861-003-C Description: No 1, 0.13-0.16mm Square & Rectangular, 16 x 16 mm Pack: 1000 Case Price: $292.00 Add to Quote:
Cat #: 71861-004 Description: No 1, 0.13-0.16mm Square & Rectangular, 18 x 18 mm Pack: 100 Pack Price: $27.00 Add to Quote:
Cat #: 71861-004-C Description: No 1, 0.13-0.16mm Square & Rectangular, 18 x 18 mm Pack: 1000 Case Price: $254.00 Add to Quote:
Cat #: 71861-005 Description: No 1, 0.13-0.16mm Square & Rectangular, 20 x 20 mm Pack: 100 Pack Price: $35.00 Add to Quote:
Cat #: 71861-005-C Description: No 1, 0.13-0.16mm Square & Rectangular, 20 x 20 mm Pack: 1000 Case Price: $338.00 Add to Quote:
Cat #: 71861-006 Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 22 mm Pack: 100 Pack Price: $35.00 Add to Quote:
Cat #: 71861-006-C Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 22 mm Pack: 1000 Case Price: $338.00 Add to Quote:
Cat #: 71861-007 Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 24 mm Pack: 100 Pack Price: $44.75 Add to Quote:
Square and Rectangle Hinged plastic boxes containing 200 pieces.
Cat # Description Pack Price Quote Quantity
Cat #: 71861-008 Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 22 mm Pack: 200 Pack Price: $38.00 Add to Quote:
Cat #: 71861-008-C Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 22 mm Pack: 2000 Case Price: $364.00 Add to Quote:
Cat #: 71861-009 Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 24 mm Pack: 200 Pack Price: $48.75 Add to Quote:
Cat #: 71861-009-C Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 24 mm Pack: 2000 Case Price: $468.00 Add to Quote:
Cat #: 71861-010 Description: No 1, 0.13-0.16mm Square & Rectangular, 21 x 26 mm Pack: 200 Pack Price: $48.75 Add to Quote:
Cat #: 71861-010-C Description: No 1, 0.13-0.16mm Square & Rectangular, 21 x 26 mm Pack: 2000 Case Price: $468.00 Add to Quote:
Rectangle Hinged plastic boxes containing 100 pieces.
Cat # Description Pack Price Quote Quantity
Cat #: 71861-011 Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 30 mm Pack: 100 Pack Price: $56.25 Add to Quote:
Cat #: 71861-011-C Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 30 mm Pack: 1000 Case Price: $541.00 Add to Quote:
Cat #: 71861-012 Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 32 mm Pack: 100 Pack Price: $58.50 Add to Quote:
Cat #: 71861-013 Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 40 mm Pack: 100 Pack Price: $69.25 Add to Quote:
Cat #: 71861-013-C Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 40 mm Pack: 1000 Case Price: $676.00 Add to Quote:
Cat #: 71861-014-C Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 50 mm Pack: 1000 Case Price: $728.00 Add to Quote:
Cat #: 71861-015 Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 60 mm Pack: 100 Pack Price: $90.00 Add to Quote:
Cat #: 71861-015-C Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 60 mm Pack: 1000 Case Price: $884.00 Add to Quote:
Cat #: 71861-016 Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 32 mm Pack: 100 Pack Price: $61.50 Add to Quote:
Cat #: 71861-016-C Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 32 mm Pack: 1000 Case Price: $572.00 Add to Quote:
Cat #: 71861-017 Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 36 mm Pack: 100 Pack Price: $69.50 Add to Quote:
Cat #: 71861-017-C Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 36 mm Pack: 1000 Case Price: $676.00 Add to Quote:
Cat #: 71861-018 Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 40 mm Pack: 100 Pack Price: $71.50 Add to Quote:
Cat #: 71861-019 Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 46 mm Pack: 100 Pack Price: $78.00 Add to Quote:
Cat #: 71861-019-C Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 46 mm Pack: 1000 Case Price: $718.00 Add to Quote:
Cat #: 71861-020 Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 48 mm Pack: 100 Pack Price: $83.25 Add to Quote:
Cat #: 71861-020-C Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 48 mm Pack: 1000 Case Price: $806.00 Add to Quote:
Cat #: 71861-021-C Description: No 1, 0.13-0.16mm Square & Rectangular, 22 x 50 mm Pack: 1000 Case Price: $806.00 Add to Quote:
Cat #: 71861-022 Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 55 mm Pack: 100 Pack Price: $85.50 Add to Quote:
Cat #: 71861-022-C Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 55 mm Pack: 1000 Case Price: $827.00 Add to Quote:
Cat #: 71861-023 Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 60 mm Pack: 100 Pack Price: $91.75 Add to Quote:
Cat #: 71861-023-C Description: No 1, 0.13-0.16mm Square & Rectangular, 24 x 60 mm Pack: 1000 Case Price: $895.00 Add to Quote:
Circular - Two-part plastic boxes containing 100 pieces.
Cat # Description Pack Price Quote Quantity
Cat #: 71861-024 Description: No 1, 0.13-0.16mm Circular, 10 mm dia. Pack: 100 Pack Price: $14.25 Add to Quote:
Cat #: 71861-024-C Description: No 1, 0.13-0.16mm Circular, 10 mm dia. Pack: 1000 Case Price: $135.00 Add to Quote:
Cat #: 71861-025 Description: No 1, 0.13-0.16mm Circular, 12 mm dia. Pack: 100 Pack Price: $11.75 Add to Quote:
Cat #: 71861-025-C Description: No 1, 0.13-0.16mm Circular, 12 mm dia. Pack: 1000 Case Price: $93.75 Add to Quote:
Cat #: 71861-026 Description: No 1, 0.13-0.16mm Circular, 13 mm dia. Pack: 100 Pack Price: $11.00 Add to Quote:
Cat #: 71861-026-C Description: No 1, 0.13-0.16mm Circular, 13 mm dia. Pack: 1000 Case Price: $93.75 Add to Quote:
Cat #: 71861-027 Description: No 1, 0.13-0.16mm Circular, 14 mm dia. Pack: 100 Pack Price: $13.25 Add to Quote:
Cat #: 71861-027-C Description: No 1, 0.13-0.16mm Circular, 14 mm dia. Pack: 1000 Case Price: $109.00 Add to Quote:
Cat #: 71861-028 Description: No 1, 0.13-0.16mm Circular, 15 mm dia. Pack: 100 Pack Price: $11.00 Add to Quote:
Cat #: 71861-028-C Description: No 1, 0.13-0.16mm Circular, 15 mm dia. Pack: 1000 Case Price: $94.25 Add to Quote:
Cat #: 71861-029 Description: No 1, 0.13-0.16mm Circular, 16 mm dia. Pack: 100 Pack Price: $11.00 Add to Quote:
Cat #: 71861-029-C Description: No 1, 0.13-0.16mm Circular, 16 mm dia. Pack: 1000 Case Price: $101.00 Add to Quote:
Cat #: 71861-030 Description: No 1, 0.13-0.16mm Circular, 18 mm dia. Pack: 100 Pack Price: $15.25 Add to Quote:
Cat #: 71861-030-C Description: No 1, 0.13-0.16mm Circular, 18 mm dia. Pack: 1000 Case Price: $107.00 Add to Quote:
Cat #: 71861-032 Description: No 1, 0.13-0.16mm Circular, 22 mm dia. Pack: 100 Pack Price: $16.25 Add to Quote:
Cat #: 71861-034 Description: No 1, 0.13-0.16mm Circular, 25 mm dia. Pack: 100 Pack Price: $16.25 Add to Quote:
Cat #: 71861-034-C Description: No 1, 0.13-0.16mm Circular, 25 mm dia. Pack: 1000 Case Price: $141.00 Add to Quote:
Two-part plastic boxes containing 100 pieces. - Super-hydrophobic surfaces on both sides.
Cat # Description Pack Price Quote Quantity
Cat #: 71861-036 Description: No 1, 0.13-0.16mm Hydrophobic, 12 mm dia. Pack: 100 Pack Price: $56.75 Add to Quote:
Cat #: 71861-036-C Description: No 1, 0.13-0.16mm Hydrophobic, 12 mm dia. Pack: 1000 Case Price: $548.00 Add to Quote:
Cat #: 71861-037 Description: No 1, 0.13-0.16mm Hydrophobic, 18 mm dia. Pack: 100 Pack Price: $48.75 Add to Quote:
Cat #: 71861-038 Description: No 1, 0.13-0.16mm Hydrophobic, 22 mm dia. Pack: 100 Pack Price: $51.00 Add to Quote:
Cat #: 71861-038-C Description: No 1, 0.13-0.16mm Hydrophobic, 22 mm dia. Pack: 1000 Case Price: $468.00 Add to Quote:
Cat #: 71861-039 Description: No 1, 0.13-0.16mm Hydrophobic, 12 x 12 mm Pack: 100 Pack Price: $39.75 Add to Quote:
Cat #: 71861-039-C Description: No 1, 0.13-0.16mm Hydrophobic, 12 x 12 mm Pack: 1000 Case Price: $390.00 Add to Quote:
Cat #: 71861-041 Description: No 1, 0.13-0.16mm Hydrophobic, 22 x 22 mm Pack: 100 Pack Price: $45.75 Add to Quote:
Hinged plastic boxes containing 1 or 2 ounces.
Cat # Description Pack Price Quote Quantity
Cat #: 71861-042 Description: No 1, 0.13-0.16mm Ounce Packaging, 22 x 22 mm Pack: 1 oz Price: $8.60 Add to Quote:
Cat #: 71861-043 Description: No 1, 0.13-0.16mm Ounce Packaging, 22 x 30 mm Pack: 1 oz Price: $56.25 Add to Quote:
Cat #: 71861-043-C Description: No 1, 0.13-0.16mm Ounce Packaging, 22 x 30 mm Pack: 10 x 1 oz Price: $541.00 Add to Quote:
Cat #: 71861-044 Description: No 1, 0.13-0.16mm Ounce Packaging, 22 x40 mm Pack: 1 oz Price: $8.60 Add to Quote:
Cat #: 71861-044-C Description: No 1, 0.13-0.16mm Ounce Packaging, 22 x 40 mm Pack: 10 x 1 oz Price: $76.00 Add to Quote:
Cat #: 71861-045 Description: No 1, 0.13-0.16mm Ounce Packaging, 22 x 50 mm Pack: 1 oz Price: $8.60 Add to Quote:
Cat #: 71861-046 Description: No 1, 0.13-0.16mm Ounce Packaging, 24 x 32 mm Pack: 1 oz Price: $8.60 Add to Quote:
Cat #: 71861-046-C Description: No 1, 0.13-0.16mm Ounce Packaging, 24 x 32 mm Pack: 10 x 1 oz Price: $76.00 Add to Quote:
Cat #: 71861-047 Description: No 1, 0.13-0.16mm Ounce Packaging, 24 x 40 mm Pack: 1 oz Price: $8.60 Add to Quote:
Cat #: 71861-047-C Description: No 1, 0.13-0.16mm Ounce Packaging, 24 x 40 mm Pack: 10 x 1 oz Price: $76.00 Add to Quote:
Cat #: 71861-048 Description: No 1, 0.13-0.16mm Ounce Packaging, 24 x 50 mm Pack: 2 oz Price: $8.60 Add to Quote:
Cat #: 71861-048-C Description: No 1, 0.13-0.16mm Ounce Packaging, 24 x 50 mm Pack: 10 x 2 oz Price: $76.00 Add to Quote:
Cat #: 71861-049 Description: No 1, 0.13-0.16mm Ounce Packaging, 24 x 55 mm Pack: 1 oz Price: $87.50 Add to Quote:
Cat #: 71861-049-C Description: No 1, 0.13-0.16mm Ounce Packaging, 24 x 55 mm Pack: 10 x 1 oz Price: $832.00 Add to Quote:
Cat #: 71861-050 Description: No 1, 0.13-0.16mm Ounce Packaging, 24 x 60 mm Pack: 1 oz Price: $93.75 Add to Quote:
Cat #: 71861-050-C Description: No 1, 0.13-0.16mm Ounce Packaging, 24 x 60 mm Pack: 10 x 1 oz Price: $884.00 Add to Quote:
Cat #: 71861-051 Description: No 1, 0.13-0.16mm Ounce Packaging, 24 x 60 mm Pack: 2 oz Price: $8.60 Add to Quote:
Cardboard box containing 100 pieces.
Cat # Description Pack Price Quote Quantity
Cat #: 71861-035 Description: No 1, 0.13-0.16mm Circular, 30 mm dia. Pack: 100 Pack Price: $23.00 Add to Quote:
Cat #: 71861-035-C Description: No 1, 0.13-0.16mm Circular, 30 mm dia. Pack: 1000 Case Price: $224.00 Add to Quote:

701 Hemlock Road
Morgantown, PA 19543
Phone: 215-412-8400 • Toll Free: 800-523-5874
Email: [email protected]
Fax: 215-412-8450

Additional Links
Get Technical Information
© 2026 Electron Microscopy Sciences
Powered by nopCommerce
Privacy Policy Site Map