MTC Bio C3220-SG ClearSeal 2.0mL (13.1 x 46.8mm), sterile, w/ O-ring & attached caps, printed graduations, self-standing, 1000/cs

These tubes are designed for sample storage, processing, and centrifugation in molecular biology, biochemistry, and clinical labs. Their 2.0 mL capacity makes them suitable for routine workflows, assays, and aliquoting of solutions, reagents, and biological samples.

Each tube includes an assembled screw cap with a silicone O-ring, providing a secure, leak-resistant seal across a wide temperature range from about -90 °C to +121 °C — ideal for freezing, autoclaving, and harsh lab conditions.

The white printed graduations on the tube body allow easy and accurate visual measurement of liquid volumes (e.g., 0.25 mL, 1.25 mL), improving consistency in sample handling and reducing the need for external measurement tools.

“Self-standing” means the tubes have a flat bottom design that allows them to remain upright without support, improving workflow efficiency by reducing the need for tube racks during sample handling and storage steps.

Yes — the tubes are sterile and free of RNase, DNase, and pyrogens, making them appropriate for sensitive biological work such as nucleic acid preparation, protein assays, and cell culture sample storage where contamination must be minimized.