Burette with straight stopcock 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. 1642 Burette with straight stopcock Capacity. (ml)Length (mm)O.D. (mm)Graduated interval (ml) 1045090.0525550120.150750130.1100800180.2