Tube made of polypropylene / Cap made of polyethylene
Designed for storage and transportation of biological material. Manufactured from non-toxic polypropylene, tubes provide strength and clarity and exhibit some unique design features. Five sizes are available from 5 to 30 ml. The T550-10ATPR tube has a white marking area to make sample identification more convenient. All graduated tubes are in 0.5 ml increments. They have external threads to provide a smooth and uniform inner surface.
A perfect leakproof seal is obtained by the use of a specially designed flexible sealing lip inside the polyethylene closures. Cap also feature a long skirt and a super fast thread design allowing them to be removed or sealed with a single turn. The most secure seal is provided by using a special cap (T550WOS, T552WOS) featuring an exclusive silicone O-ring. These caps however do not fit on the 7 ml tube. Tubes and caps are sold separately.