Tubes are designed with conical bottoms allowing for more complete sample retrieval.
Screw caps with O-rings guard against leakage by forming a positive seal against the rim of the tube.
Tethered screw caps remain attached to the sample tube but can rotate completely for convenience.
Graduation marks on the microcentrifuge tube allow for effective sample reference.
External ribs on the free standing microcentrifuge tubes allow for single-handed opening and closing when placed in racks with serrated holes.
Screw caps Microcentrifuge Tubes work with many automated systems.
O-ring is manufactured from durable ethylene polypropylene di-monomer compound.