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* The API Scale is based on the following formula: °API @ 60°F = (141.5/(Specific Gravity at 60°F) – 131.5
* The thermometer scale is located in the body of the hydrometer
* Calibrated for use at 15°C/60°F

$43.55 Add to cart View Product Details

API ASTM Hydrometer, with Thermometer, ASTM 52H, API 9 to 21°

* The API Scale is based on the following formula: °API @ 60°F = (141.5/(Specific Gravity at 60°F) – 131.5
* The thermometer scale is located in the body of the hydrometer
* Calibrated for use at 15°C/60°F

$33.54 Add to cart View Product Details

API ASTM Hydrometer, with Thermometer, ASTM 53H, API 19 to 31°

* The API Scale is based on the following formula: °API @ 60°F = (141.5/(Specific Gravity at 60°F) – 131.5
* The thermometer scale is located in the body of the hydrometer
* Calibrated for use at 15°C/60°F

$43.55 Add to cart View Product Details

API ASTM Hydrometer, with Thermometer, ASTM 53H, API 19 to 31°

* The API Scale is based on the following formula: °API @ 60°F = (141.5/(Specific Gravity at 60°F) – 131.5
* The thermometer scale is located in the body of the hydrometer
* Calibrated for use at 15°C/60°F

$33.54 Add to cart View Product Details

API ASTM Hydrometer, with Thermometer, ASTM 54H, API 29 to 41°

* The API Scale is based on the following formula: °API @ 60°F = (141.5/(Specific Gravity at 60°F) – 131.5
* The thermometer scale is located in the body of the hydrometer
* Calibrated for use at 15°C/60°F

$43.55 Add to cart View Product Details

API ASTM Hydrometer, with Thermometer, ASTM 54H, API 29 to 41°

* The API Scale is based on the following formula: °API @ 60°F = (141.5/(Specific Gravity at 60°F) – 131.5
* The thermometer scale is located in the body of the hydrometer
* Calibrated for use at 15°C/60°F

$33.54 Add to cart View Product Details

API ASTM Hydrometer, with Thermometer, ASTM 55H, API 39 to 51°

* The API Scale is based on the following formula: °API @ 60°F = (141.5/(Specific Gravity at 60°F) – 131.5
* The thermometer scale is located in the body of the hydrometer
* Calibrated for use at 15°C/60°F

$43.55 Add to cart View Product Details

API ASTM Hydrometer, with Thermometer, ASTM 55H, API 39 to 51°

* The API Scale is based on the following formula: °API @ 60°F = (141.5/(Specific Gravity at 60°F) – 131.5
* The thermometer scale is located in the body of the hydrometer
* Calibrated for use at 15°C/60°F

$33.54 Add to cart View Product Details

API ASTM Hydrometer, with Thermometer, ASTM 56H, API 49 to 61°

* The API Scale is based on the following formula: °API @ 60°F = (141.5/(Specific Gravity at 60°F) – 131.5
* The thermometer scale is located in the body of the hydrometer
* Calibrated for use at 15°C/60°F

$43.55 Add to cart View Product Details