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NEXTERION^® Glass B and Glass D

SCHOTT provides two different types of uncoated glass slides, NEXTERION^® Glass B (BOROFLOAT^® 33) and D (D263T), for customers looking to apply their own functional coatings. Both glass materials are borosilicate glasses with high chemical resistance, excellent transmission, low fluorescence, and exceptional flatness and were specially selected by SCHOTT Microarray Solutions as the optimal glass types for microarray related applications. The naturally pristine glass surfaces can be used without any additional polishing steps and all the slides are laser cut to minimize particle contamination.

NEXTERION® Glass B is a highly chemically resistant borosilicate glass that is produced by melting the purest raw materials. The microfloat process is used for manufacturing this glass type, resulting in a pristine, fire-polished surface that can be used without any additional polishing.
This process allows the production of glass substrates with tight geometric properties. In addition, the fluorescence is particularly low in the range of Cy3™ and Cy5™ emission wavelengths (570 nm and 670 nm), making NEXTERION® glass slides the perfect substrate solution for microarray applications.

NEXTERION^® Glass D is a high quality borosilicate glass produced by melting the purest raw materials. It is manufactured by a special down-draw production process that results in fire-polished surfaces that can be used without any additional processing.
The NEXTERION^® Glass D production process allows SCHOTT to offer glass substrates with extremely tight geometric properties. In addition, the fluorescence is particularly low in the range of Cy3™ and Cy5™ emission wavelengths (570 nm and 670 nm).

NEXTERION^® Glass B and D specification

NEXTERION^® uncoated standard slides are manufactured to the following specifications:

• 25 mm x 75.6 mm ± 0.1 mm
• Thickness 1.0 mm ± 0.05 mm
• Plain cut edges, by using the precise laser cutting process

NEXTERION^® uncoated standard plates are manufactured to the following specifications:

• 74 mm x 110 mm ± 0.1 mm
• Thickness 1.0 mm ± 0.05 mm
• Plain cut edges, by using the precise laser cutting process

We offer all of our substrates exclusively cleanroom cleaned. The cleaning process is conducted in an automated ultrasonic cleaning line using multiple wash steps of varying pH's, rinse steps and final drying stage. Afterwards, the substrates are packed up in plastic storage boxes which are sealed in air-tight laminated foil pouches under inert Argon atmosphere. The whole process is certified with Class 100 clean room. The glass may be used without any additional cleaning step.