Polypropylene flask and screw cap. Durable with excellent chemical resistance, with the same accuracy as glass. Permanent color graduation line with marking spot. Calibrated “to contain/deliver” at 20

Polypropylene construction of both cylinder and base. All sizes have generous pour spout, large molded-in, and easy-to-read graduations. Can be chemically sterilized without affecting accuracy. Autocl

Teflon stopcock for your buret, separatory funnel, or other labware.

Durable, crystal-clear acrylic body is individually calibrated to meet the accuracy requirements of ASTM E287. Leak-proof stopcock with self-lubricating Teflon® TFE plug. Excellent for general lab or

Polypropylene filtering flask with side-arm at 45° angle prevents tipping. Barbed side-arm accepts 1/4-3/8 I.D. tubing for application of vacuum. See page 380 for tubing; see page 375 for stopper.