PTFE Beaker & Watch Glass Covers

Designed with a concave profile, these durable covers rest securely over the rims of compatible laboratory beakers. They efficiently contain splashing, minimize airborne particulate contamination, and allow condensate to run safely back into the mixture. Because PTFE is naturally hydrophobic and non-wetting, droplets slide off the surface easily, ensuring maximum sample recovery during hot digestions or recrystallizations.

Key Functional Benefits:

• Universal Chemical Inertness: Resists attack from virtually all chemicals, including extremely aggressive reagents like hydrofluoric acid (HF), concentrated nitric acid, and strong alkalis that readily etch or dissolve standard glassware
• Broad Temperature Tolerance: Safely operates across a massive temperature spectrum from cryogenic limits of -200°C up to continuous high-heat exposures of 260°C
• Shatterproof Lab Safety: Completely eliminates the risk of glassware breakages and punctures, protecting laboratory personnel from chemical exposure and glass shards
• Trace Metal Cleanliness: Extremely low levels of extractable metals and impurities prevent trace contamination during ultra-pure analytical sample preparations
• Naturally Hydrophobic Surface: Prevents surface-tension binding of sample droplets, allowing condensed steam and volatile compounds to drip cleanly back into the main liquid volume