Glass Cover Slips

Premier quality Micro-Tec glass coverslips are made from optically clear and special formulated borosilicate glass. Available in thickness #1 (0.13-0.17) in three popular sizes; 18 x 18mm, 22 x 22mm and 24 x 40mm.

Supplied in single packs or boxes of 10 packs (sealed in barrier foil). Main application is microscope cover glass; other applications include thin film substrate and coating test glass.

coverslips
Specifications of the Micro-Tec glass cover slips
Product # Type Thickness Dimensions Slide material Precleaned Packaging
51-002218-1 Square #1 0.13-0.17mm 18 x 18mm Borosilicate glass yes Pkg/100
51-002218-10 Square #1 0.13-0.17mm 18 x 18mm Borosilicate glass yes Box/1000
51-002222-1 Square #1 0.13-0.17mm 22 x 22mm Borosilicate glass yes Pkg/100
51-002222-10 Square #1 0.13-0.17mm 22 x 22mm Borosilicate glass yes Box/1000
51-002224-1 Rectangle #1 0.13-0.17mm 24 x 40mm Borosilicate glass yes Box/1 ounce (~86)
51-002224-10 Rectangle #1 0.13-0.17mm 24 x 40mm Borosilicate glass yes Box/10 ounce (~860)
Typical chemical composition of borosilicate glass cover slips
Compound Wt%
SiO2 64.1
B2O 8.4
Al2O3 4.2
Na2O 6.4
K2O 6.9
ZnO 5.9
TiO2 4.0
Sb2O3 0.1
Typical physical properties of borosilicate glass cover slips
Parameter Value/unit
Light transmission, total solar 92.5%
Refractive index 1.5255 at 546.07nm
Density 2.51 g/cm3
Hardness 6 Mohs scale
Coefficient of expansion 3.3 x 10-6 /°C
Poission's ratio 0.208
Strain Point 529°C
Annealing temperature 557°C
Softening temperature 736°C
Liquidus temperature 820°C

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