Screw Caps External Thread

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Micronic’s externally threaded screw caps securely seal tubes for long-term sample storage at ultra-low temperatures. To meet the diverse needs of different researchers, Micronic offers a range of sealing solutions. Externally threaded tubes can be sealed with standard screw caps for tubes with external thread—caps that are available for the following tubes sizes: 0.30ml, 0.75ml, and 1.40ml (96-well), 1.00ml and 4.00ml (48-well), and 3.50ml (24-well).

A Micronic 96-well format rack with lid of push cap tubes in freezer

Optimal seal quality

Externally threaded screw caps have a triple-start thread for optimal sample storage and are designed to lock when sealed to prevent over tightening.

Tube Compatibility

The externally threaded screw caps are compatible with 96-well (0.30ml, 0.75ml, and 1.40ml), 48-well (1.00ml and 4.00ml), and 24-well (3.50ml) tubes.

Automation Friendly

The externally threaded screw caps are designed specifically for automated processes and are available in transparent and six different colors.

Resistance

The externally threaded screw caps resist chemical solvents. All caps are produced in a class 7 clean room and are RNase/DNase and Pyrogen free.

Material Polyethylene
Cap height 7.0 mm (96-, 48-, and 24-format)
Temperature range Vapor phase LN2 to +100°C
Available in 6 different colors
Available sterile, gamma radiated, (15 kGy avg.) or Et0 treated
Available pre-capped on Micronic screw cap tubes

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