ASTM Hydrometers and Thermohydrometers For density, relative density (specific gravity) or API gravity determination of crude petroleum, liquid petroleum products and mixtures of petroleum and non-petroleum products. Calibrated hydrometers and thermohydrometers are available from Koehler with an ISO/IEC 17025 and ANSI/NCSL Z-540-1 Report of Calibration. When inquiring about calibrated hydrometers and thermohydrometers, please refer to […]
Standard temperature 60°F, subdivisions 0.1° API, length 380mm, temperature scale F 30-220
Catalog No. | ASTM Thermohydrometer No. | Nominal API Gravity Range, deg. |
G-142-251-000-71H | 71H | -1 to 11 |
G-142-251-000-72H | 72H | 9 to 29 |
G-142-251-000-73H | 73H | 19 to 31 |
G-142-251-000-74H | 74H | 29 to 41 |