Optical glass D 263® bio

Product Information Highly transmissive BOROSILICATE GLASS with a low level of autofluorescence D 263® bio is a colorless borosilicate glass with a homogeneous, low intrinsic auto fluorescence across the spectrum. Tight, controlled refractive index tolerances ensure consistent, high optical transmission properties and diagnostic results. It offers great chemical stability and resistance to reagents as used in microarray and diagnostic protocols. D 263® bio is produced in a SCHOTT-specific down-draw method, which results in non-porous, ultra-flat fire-polished surface quality on both sides at target thicknesses without polishing. The glass is available in round wafer dimensions or custom-cut rectangular substrates wich are cleaned, inspected and packaged to meet demanding standards of the biotechnology and semiconductor industries. Chemically toughenable and easy to structure, this glass can used in numerous applications in demand of high optical and chemical qualities such as substrate glass for optical diagnostics, microfluidic components or other consumer and industrial applications. Technical Details Technical Data Luminous transmittance ​τvD65 (d = 0.15 mm) : 91.7% Coefficient of mean linear thermal expansion α (20 °C; 300 °C) (static measurement) : 7.2 ⋅ 10-6 K-1 Transformation temperature Tg : 557 °C Dielectric constant εr at 1 MHz : 6.7 Refractive index nD : 1.5230 Refractive index ne (+/- 0,0015) : 1.5255 Density ρ (annealed at 40 °C/h) : 2.51 g/cm3