The American Society for Testing and Materials (ASTM) Specification E 100 describes hydrometers using the API (American Petroleum Institute) scale and others in degrees Specific Gravity.

330mm Long Plain Hydrometers – American Petroleum Institute API Scale

330-astmadjusted at 60°F for Petroleum Products and other liquids of low surface tension.

Sizes and Specifications

ASTM Hydrometer No

Range
API Scale

Subdivision

Product No

ASTM 1H

-1 to 11

0.1°

09/001/0

ASTM 2H

9 to 21

0.1°

09/002/0

ASTM 3H

19 to 21

0.1°

09/003/0

ASTM 4H

29 to 41

0.1°

09/004/0

ASTM 5H

39 to 51

0.1°

09/005/0

ASTM 6H

49 to 61

0.1°

09/006/0

ASTM 7H

59 to 71

0.1°

09/007/0

ASTM 8H

69 to 81

0.1°

09/008/0

ASTM 9H

79 to 91

0.1°

09/009/0

ASTM 10H

89 to 101

0.1°

09/010/0


330mm Long Plain Hydrometers – Specific Gravity Scale

330-longplain2adjusted at 60°F for Petroleum Products and other liquids of low surface tension.

Sizes and Specifications

ASTM Hydrometer No

Range
°SG

Subdivision

Product No

ASTM 82H

0.650 to 0.700

0.0005°

09/082/0

ASTM 83H

0.700 to 0.750

0.0005°

09/083/0

ASTM 84H

0.750 to 0.800

0.0005°

09/084/0

ASTM 85H

0.800 to 0.850

0.0005°

09/085/0

ASTM 86H

0.850 to 0.900

0.0005°

09/086/0

ASTM 87H

0.900 to 0.950

0.0005°

09/087/0

ASTM 88H

0.950 to 1.000

0.0005°

09/088/0

ASTM 89H

1.000 to 1.050

0.0005°

09/089/0

ASTM 90H

1.050 to 1.100

0.0005°

09/090/0


330mm Long Hydrometers

330-longadjusted at 60°F for heavier liquids of medium surface tension.

Sizes and Specifications

ASTM Hydrometer No

Range
°SG

Subdivision

Product No

ASTM 98H

0.950 to 1.000

0.0005°

09/098/0

ASTM 111H

1.000 to 1.050

0.0005°

09/111/0

ASTM 112H

1.050 to 1.100

0.0005°

09/112/0

ASTM 113H

1.100 to 1.150

0.0005°

09/113/0

ASTM 114H

1.150 to 1.200

0.0005°

09/114/0

ASTM 115H

1.200 to 1.250

0.0005°

09/115/0

ASTM 116H

1.250 to 1.300

0.0005°

09/116/0

ASTM 117H

1.300 to 1.350

0.0005°

09/117/0

ASTM 118H

1.350 to 1.400

0.0005°

09/118/0

ASTM 119H

1.400 to 1.450

0.0005°

09/119/0

ASTM 120H

1.450 to 1.500

0.0005°

09/120/0

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