These sample tubes are designed for the storage and transport of biological material. External threads provide a smooth and uniform inner surface, reducing the risk of contamination. Manufactured from non-toxic polypropylene for strength and clarity. Tubes can be autoclaved (121°C) in upright position with caps loosened. Choose from non-printed or graduated with white writing area.

Order the color coding caps separately. Caps feature a long skirt and require only a single turn to remove or seal. Caps are available with or without a silicone washer. For maximum leak protection choose the caps with silicone washers.