Storage and Transport Tube Round Bottom Plain 12.3 X 72.5 mm 4 mL Without Color Coding Without Closure Polypropylene Tube

They are manufactured from non-toxic polypropylene and offer strength and clarity

The vial has external threads, which provide a smooth and uniform inner surface which reduces the risk of contamination

The screw caps are also made of polypropylene, providing the same coefficient of expansion as the tubes

Screw caps sold separately