This Burette has a transparent acrylic body and a leakproof Stopcock made fitted with a self lubricating PTFE plug. Each burette is individually calibrated to give maximum Accuracy.Acrylic body is unaffected by dilute minerals acid & bases except Hydrofloric acid & Ammonium .The PH range of 1-14 is deal and can be used upto 5%wt/wt of acids or 30%bases.