Features: ·This burette has a clear acrylic body and a leakproof stopcock with a self-lubricating PTFE plug. ·Each burette is individually calibrated for maximum accuracy. ·Acrylic body is resistant to dilute mineral acids and bases except Hydrofluoric Acid and Ammonium Hydroxide. ·It can be used with pH ranging from 1 to 14 and with up to 5% Weight per weight of acids or 30% of bases. Specifications: ·Size: 25ml & 50 ml ·Graduations: 0.1ml.