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Hydrometer ASTM therm 52H API 9 to 21
Hydrometer ASTM therm 53H API 19 to 31
Hydrometer ASTM therm 54H API 29 to 41
Hydrometer ASTM therm 55H API 39 to 51
Hydrometer ASTM therm 56H API 49 to 61
Hydrometer ASTM therm 57H API 59 to 71
Hydrometer ASTM therm 52H API 9 to 21
Hydrometer ASTM therm 53H API 19 to 31
Hydrometer ASTM therm 54H API 29 to 41
Hydrometer ASTM therm 55H API 39 to 51
Hydrometer ASTM therm 56H API 49 to 61
Hydrometer ASTM therm 57H API 59 to 71

API Thermo-Hydrometers
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Total Ratings: 0
Avg. Ratings: out of 5

6752HTS 6756HTS 6755HTS 6754HTS 6753HTS 6757HTS
76546-604EA 106.35 CAD
76546-604 76546-602 76546-600 76546-598 76546-596 76546-594
API Thermo-Hydrometers
Hydrometers
Our API scale hydrometers measure the scale which 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.

  • Safety blue thermometer liquid fill
The thermometer scale (where applicable) for these thermo-hydrometers is located in the body. All instruments are suitable for certification for use as a primary reference with NIST traceability.

The API scale is based on the following formula: °API at 60 °F = 141.5/(specific gravity at 60 °F) - 131.5.
   
 

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