This Corning 431449 Disposable Aseptic 70mm Transfer Caps for 3L Erlenmeyer Flask / Case of (4) is in new, unused condition and is guaranteed to be fully functional. These caps came from a local lab that had surplus inventory. Please feel free to contact us with any questions. Quantity: 4 Retail Price: $638.60 per case hese Corning Erlenmeyer Flask Aseptic Transfer Caps are sterile (10?? SAL), individually double bagged and fit the 3L Corning Polycarbonate Erlenmeyer flasks. The venting port ends in a 50mm diameter vent filter with a 0.2 µm pore PVDF membrane and a barbed fitting. The liquid transfer port has an internal end with a rigid polypropylene dip tube angled to reach the bottom of the flask and on the external side a 1/4 inch ID (6.4mm), 3/8 inch (9.5mm) OD chemically resistant, heat sealable flexible tubing, ending in a medical grade polycarbonate (MPC) male disconnect with a female sealing cap. Product Number 431449 Qty./Pk 1 / Pk Qty./Cs 4 / Cs Brand Corning Cap Style Screw cap Cap Material Polypropylene Cap Diameter 70 mm Cap Color Orange Color Orange Sterile Yes