Ace Glass 9473-20 Tapered Flask 50mL 4 Necks 14/20 Center (2) 14/20 (1) #7 Ace-Thred

Walls tapered inward toward the bottom to allow continuous operation with smaller volumes. The four neck versions have one #7 Ace-Thred neck to accommodate thermometers and electrodes, etc. up to 7mm OD. Ace-Threds include nylon bushings and FETFE o-rings.