H-B Instrument B61804-0200 Plain form Hydrometer, 19 to 31 Baume/0.1 Div DURAC Baume plain form hydrometer is for use with liquids heavier than water Range: 19 to 31; divisions: 0.1; accuracy: 0.1 Baume 300mm (11.8) in length Individually serialized; features a metal ballast Tested and calibrated in our exclusive triple accredited/registered ISO/IEC 17025:2005, A2LA accredited laboratory against equipment whose calibration is traceable to NIST and DKD/PTB