[SSIB6321-S0S] SSI Cryofreeze Tubes - 1.8 mL, Externally Threaded, Round Base, Sterile, 50/bag (SSIBio)
No cap inserts.
CryoFreeze Tubes with Caps
Certified free of RNase, DNase, DNA, and PCR inhibitors, also endotoxin-free.
Ideal for vapor-phase liquid nitrogen freezing. (Not suitable for immersion.)
Externally Threaded Tubes
Caps have lip seal feature so no o-ring is necessary.
Three convenient tube volumes from 1.0 to 4.5 ml.
External threads reduce contamination, cross-contamination potential.