Ultrasound welding facilitates a perfect and uniform seal of each straw.

• Focused heat generation instead of undefined temperature radiation
• Defined straw position (fixed angle and depth of insertion)
• Sealing unit closes fully automatic
• Standardized welding pressure due to preset welding gap
• Precise and reproducible selection of the welding time based on the operating instructions

This cryosealer can be used for 0.25, 0.5 ml straws and 0.3 ml CBS cryobiostraws.