Corning 4980-500 Pyrex Narrow Mouth Erlenmeyer Flask with Heavy Duty Rim, 100 mL capacity-500 mL Capacity Graduation Range, Rubber Stopper Number 7, 101 mm Diameter: Amazon.com: Industrial & Scientific
PYREX 500mL Round Media Storage Bottles, with GL45 Screw Cap, Ea : Amazon.ca: Industrial & Scientific