VWR® Two-Hole Rubber Stoppers, Black Size 14
Bottom Diameter 75 mm Top Diameter 90 mm Lentgh 39 mm
These black, high percentage rubber stoppers are low in free sulfur and have two holes to facilitate laboratory procedures.
Stoppers remain resilient and pliable under most laboratory conditions
Low free sulfur
Stoppers sized as 00 have 3mm diameter holes; the size 1 stopper has 4mm holes. Stoppers sized as 2 and larger have 5mm diameter holes.