Standard Non-Sterile

These TT552 Series transport tubes are made of polypropylene. They hold and move biological samples between sites. The tubes are non-sterile. The tubes have external threads. They are available in five sizes from 5 to 30 mL. Graduated markings in 0.5 mL increments are optional. A white marking area permits sample identification. TT550 polyethylene caps give a leakproof closure with a single-turn thread. The caps are sold separately. Cap inserts permit color-coding.