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 mineral acids & bases except Hydrofloric Acid & Ammonium Hydroxide. The pH rang of 1-14 is ideal and can be used up to 5% wt/wt of acids or 30% bases. Available Different Sizes: 25, 50,100ml.