Wheaton* Nephelo Culture Flasks

Allows growth and turbidity reading at selected intervals without transfer. Merely tilt flask to allow filling of sidearm and insert sidearm into colorimeter or spectrophotometer. Side tube is scratch- and striation-free. Designed to operate on a platform shaker. Flask holds approximately 350 ml to base of sidearm. Break-resistant lip accommodates cotton plug or stopper. Manufactured from Wheaton 33* low extractable borosilicate glass. Meets ASTM Type I Class A and USP Type I standards. 500 ml capacity