API Gravity Hydrometers

API Gravity Hydrometers

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. For density of LPG and light hydrocarbons refer to K26150

API Gravity Hydrometers
Standard temperature 60°F, subdivisions 0.1° API, length 330mm
Catalog

Number                    ASTM Hydrometer No.                 Nominal API Gravity Range, deg.
251-000-01H                          1H                                                             –1 to +11
251-000-02H                         2H                                                                9 to 21
251-000-03H                         3H                                                              19 to 31
251-000-04H                         4H                                                              29 to 41
251-000-05H                         5H                                                              39 to 51
251-000-06H                         6H                                                              49 to 61
251-000-07H                         7H                                                              59 to 71
251-000-08H                         8H                                                             69 to 81
251-000-09H                          9H                                                             79 to 91
251-000-10H                         10H                                                            89 to 101.

Specific Gravity Hydrometers
Standard temperature 60/60°F, subdivisions 0.0005, length 330mm
Catalog
Number                    ASTM Hydrometer No.                  Nominal Specific Gravity Range
251-000-82H                           82H                                                     0.650 to 0.700
251-000-83H                           83H                                                     0.700 to 0.750
251-000-84H                           84H                                                     0.750 to 0.800
251-000-85H                           85H                                                     0.800 to 0.850
251-000-86H                           86H                                                     0.850 to 0.900
251-000-87H                           87H                                                      0.900 to 0.950
251-000-88H                           88H                                                     0.950 to 1.000
251-000-89H                           89H                                                     1.000 to 1.050
251-000-90H                           90H                                                     1.050 to 1.100