Made of polypropylene This series of tubes is also available either plain or with printed graduations and white marking area for sample identification. O-ring seal screw caps are unattached but incorporate a flat top which provides a writing surface. These flat surfaced caps can be used with…

Made of polypropylene Cap made of polyethylene Similar to the T336 Series but without the "tethered cap" feature. This series of tubes is available either plain or with printed graduations and white marking area for sample identification. They have all the other fine features of…