API Hydrometers

The API scale was selected in 1921 by the American Petroleum Institute (API), the U.S. Bureau of Mines, and the National Institute of Standards and Technology (NIST) as the standard hydrometer scale for petroleum products. On select API Hydrometer Hydrometers with a built-in thermometer, the thermometer scale is located in the body of the hydrometer. A correction scale for conversion of the reading to 60°F is printed opposite the temperature scale. Our API ASTM Specification Hydrometers are manufactured in strict accordance to specifications of ASTM (American Society for Testing and Materials) for accuracy and design.

21 Products

SPB-B61823-0400
SP Bel-Art, H-B DURAC Safety 39/51 Degree API Combined Form Thermo-Hydrometer
$94.33 $107.80

New

VGS-6757HTS
59 to 71° API Thermo-Hydrometer, (0.1° subdivisions), ASTM 57HL
$49.74 $56.85

NEW

SPB-B61898-0000
SP Bel-Art, H-B DURAC Individually Calibrated 19/31 Degree API ASTM 3H Hydrometer
$522.37 $614.55

New

VGS-6754HTS
29 to 41° API Thermo-Hydrometer, (0.1° subdivisions), ASTM 54HL
$49.74 $56.85

NEW

SPB-B61893-0400
SP Bel-Art, H-B DURAC 29/41 Degree API ASTM 4H Hydrometer
$57.58 $65.80

New

SPB-B61823-0200
SP Bel-Art, H-B DURAC Safety 19/31 Degree API Combined Form Thermo-Hydrometer
$97.30 $111.20

New

SPB-B61823-0100
SP Bel-Art, H-B DURAC Safety 9/21 Degree API Combined Form Thermo-Hydrometer
$96.47 $110.25

New

VGS-6756HTS
49 to 61° API Thermo-Hydrometer, (0.1° subdivisions), ASTM 56HL
$49.74 $56.85

NEW

VGS-6758HTS
69 to 81° API Thermo-Hydrometer, (0.1° subdivisions), ASTM 58HL
$47.25 $54.00

NEW

VGS-6608-7TS
59 to 71° API Thermo-Hydrometer (Short Form), (0.2° subdivisions) with 10 to 130°F Thermometer (SafetyBLUE)
While Supplies LastClearance
$27.48 $54.95

New

VGS-6722H
5 to 11° API Hydrometer, (0.1° subdivisions), ASTM 22H
While Supplies LastClearance
$17.03 $34.05

New

VGS-6723H
10 to 16° API Hydrometer, (0.1° subdivisions), ASTM 23H
While Supplies LastClearance
$17.03 $34.05

New

VGS-6727H
30 to 36° API Hydrometer, (0.1° subdivisions), ASTM 27H
While Supplies LastClearance
$17.03 $34.05

New

VGS-6726H
25 to 31° API Hydrometer, (0.1° subdivisions), ASTM 26H
While Supplies LastClearance
$17.03 $34.05

New

VGS-6755HTS
39 to 51° API Thermo-Hydrometer, (0.1° subdivisions), ASTM 55HL
$49.74 $56.85

NEW

VGS-6753HTS
19 to 31° API Thermo-Hydrometer, (0.1° subdivisions), ASTM 53HL
$49.74 $56.85

NEW

VGS-6728H
35 to 41° API Hydrometer, (0.1° subdivisions), ASTM 28H
While Supplies LastClearance
$17.03 $34.05

New

VGS-6751HTS
-1 to 11° API Thermo-Hydrometer, (0.1° subdivisions), ASTM 51HL
$47.25 $54.00

NEW

VGS-6752HTS
9 to 21° API Thermo-Hydrometer, (0.1° subdivisions), ASTM 52HL
$49.74 $56.85

NEW

SPB-B61893-0500
SP Bel-Art, H-B DURAC 39/51 Degree API ASTM 5H Hydrometer
$57.58 $65.80

New

SPB-B61823-0300
SP Bel-Art, H-B DURAC Safety 29/41 Degree API Combined Form Thermo-Hydrometer
$97.30 $111.20

New

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