KJELDAKL Flask Long Neck Lab Glassware Material:borosilicate 3.3 glass We specialize in laboratory glassware,main products:beaker,funnel,conical flask,boiling flask,burette,connection tube,test tube,gas washing bottle,separatory Funnel.etc. 1118 GG17 KJELDAKL Flask long neckCapacity (ml)Height (mm)O.D. of bulb (mm)O.D. of neck (mm) 250270842850031010032