Tubes feature flat cap with O-ring seal that provides a leak proof fit. Flat tops provide a writing surface and can be used with automatic capping machines in packaging industries.Tubes are ideal for cryogenic work and withstand temperatures from -196C to +121C.
5ml MacrewTube Screw Caps, Blue, 200/pk, 200PK Offer exceptional centrifugation stability up to 25,000 x g; autoclaving with cap off; (121°C, 20 minutes); withstand temperatures from +121°C to -196°C; and writing surface on flat cap and side wall for quick sample indentification.
Caps offer complete sealing for minimal evaporation rate during long-term storage.00 x 8. Center of caps feature membrane for easy puncture and access with a syringe/needle.