fisherbrand 12mm x 75mm test tubes polypropylene disposable non-sterile fisherbrand Extra-heavy wall construction is ideal for numerous testing applications Round bottom Special molding avoids leaks and cracks 12 O.D. x 75mm long tube has 5mL capacity and heavier wall than competitive tubes Slight lip at the top provides a seal when used with Cat. No. 14-961-12 Snap Cap (sold separately)
