3L High Efficiency Erlenmeyer Flask Bi-directional Transfer Cap with TPE Tube (50cm 1/8" ID 1/4" OD), Vent (0.22 μm), without Flask, Sterile, 1/pk, 4/cs - C10222-AZB050B Medical Supplies They are "high efficiency" in

They are "high efficiency" in that a 2L flask has 162mm diameter footprint

Produced in cGMP

42 mm diameter

NEST Scientific 520001

3L High Efficiency Erlenmeyer Flask Bi-directional Transfer Cap with TPE Tube (50cm 1/8" ID 1/4" OD), Vent (0.22 μm), without Flask, Sterile, 1/pk, 4/cs - C10222-AZB050B Medical Supplies They are "high efficiency" inThis is the transfer cap only, shaker flasks are sold separately Nest Scientific aseptic transfer caps allow for the convenient transfer of liquid in and out of Erlenmeyer flasks which greatly reduces the risk of contamination. The cap comes with pre assembled tubing, connectors and gas exchange filters for convenience. This model is described as bi directional, as it allows for the movement of liquid in and out of Erlenmeyer flasks by positive or