Corning 4980-50 Pyrex Narrow Mouth Erlenmeyer Flask with Heavy Duty Rim, 20 mL capacity-50 mL Capacity Graduation Range, Rubber Stopper Number 1, 51 mm Diameter: Amazon.com: Industrial & Scientific
PYREX® 125 mL Narrow Mouth Erlenmeyer Flask with 24/40 Standard Taper Joint | Corning 5000-125 | Macalaster Bicknell Company of NJ