SCHOTT Red Line borosilicate gage glass is engineered to provide clear, highly visible liquid level indication, even from a distance. The distinctive red longitudinal stripe creates a strong optical contrast, allowing operators to quickly and accurately identify fluid levels during operation and routine monitoring. Offering the same proven performance as other SCHOTT gage glass products, the Red Line variant provides enhanced corrosion resistance at elevated temperatures compared to standard gage glass. It is widely used in tanks, reservoirs, and low-pressure boiler systems, where visibility, safety, and long-term reliability are critical.

Manufactured with a fire-polished end finish, SCHOTT Red Line gage glass improves safety by sealing micro-fractures at the tube ends, reducing the risk of cracking, chipping, or performance-affecting blemishes. Available in a range of diameters and lengths from 8–24 inches, it offers flexibility for many standard industrial installations.

Key Advantages

• High-visibility red stripe for easy liquid level reading from a distance
• Proven SCHOTT borosilicate quality and consistency
• Improved corrosion resistance for extended service life
• Fire-polished ends enhance safety and reliability
• Suitable for tanks, reservoirs, and low-pressure boiler applications