PTFE/Silicone 96 Square Well Cap Mats

Whether you are storing aggressive chemicals, volatile compounds, or sensitive biological samples, these mats provide a reliable barrier. Options include Pre-Scored versions for easy pipette tip or autosampler needle penetration, and Ultra Low Bleed versions for high-sensitivity analytical applications like LC/MS.

Features:

• Combines a chemical-resistant PTFE face with a high-compression Silicone body for a superior seal
• Minimizes sample loss during both short-term incubation and multi-year cryogenic storage
• Available with cross-slits to allow for easy penetration by robotic liquid handlers without compromising the seal
• Ultra Low Bleed Technology - Specifically processed to reduce siloxane "ghost peaks" in sensitive analytical chromatography
• Specifically molded to fit square-well apertures, ensuring each individual well is isolated
• High-grade silicone allows for multiple injections or samplings while maintaining a secure closure

Application Insight:

• Analytical Chemistry: Use the Ultra Low Bleed (976250/976275) mats when performing mass spectrometry to ensure the highest signal-to-noise ratio and prevent contamination of the flow path
• Compound Libraries: Standard mats (976050) are ideal for large-scale storage of DMSO-dissolved compounds
• Automation: Pre-Scored (976075/976275) mats are essential for automated platforms to prevent vacuum formation and ensure smooth needle withdrawal

Tip: Chemical Compatibility: The PTFE liner faces the sample, providing an inert barrier against most organic solvents, including DMSO, Methanol, and Acetonitrile.