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 a maximum accuracy. Acrylic body is unaffected by dilute mineral acids and bases except Hydrofolic acid and Ammonium Hydroxide. The pH range from 1-14 is ideal and can be used upto 5% wt/wt of acids or 30% bases. Â