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API HYDROMETERS

AMERICAN PETROLEUM INSTITUTE HYDROMETERS

The American Petroleum Institute, the United States Bureau of Mines, and the National Institute of Standards and Technology selected the API scale in 1921 as the standard for petroleum products in the United States. The following ASTM hydrometers are also used in many other applications and procedures set forth by ASTM all are calibrated at 60°F

 

API, ASTM HYDROMETERS

Plain Form, No Thermometer, in 0.1° Subdivisions, 330mm Length
CAT. # ASTM # RANGE°
2001H 1H -1/11
2002H 2H 9/21
2003H 3H 19/31
2004H 4H 29/41
2005H 5H 39/51
2006H 6H 49/61
2007H 7H 59/71
2008H 8H 69/81
2009H 9H 79/91
2010H 10H 89/101

 

 

API, ASTM HYDROMETERS

Plain Form in 0.1° Subdivisions, 163mm Length

CAT.#

ASTM#

RANGE°

2021H

21H

0/6

2022H

22H

5/11

2023H

23H

10/16

2024H

24H

15/21

2025H

25H

20/26

2026H

26H

25/31

2027H

27H

30/36

2028H

28H

35/41

2029H

29H

40/46

2030H

30H

45/51

2031H

31H

50/56

2032H

32H

55/61

2033H

33H

60/66

2034H

34H

65/71

2035H

35H

70/76

2036H

36H

75/81

2037H

37H

80/86

2038H

38H

85/91

2039H

39H

90/96

2040H

40H

95/101


2021H

 

API, ASTM THERMO-HYDROMETERS*

Hydrometer in 0.1° Subdivisions, with Thermometer in Body, 0/150°F, 380mm Length

CAT. #

ASTM #

RANGE°

*2041H

41HL

15/23

*2042H

42HL

22/30

*2043H

43HL

29/37

*2044H

44HL

36/44

*2045H

45HL

43/51

*2051H

51HL

-1/11

*2052H

52HL

9/21

*2053H

53HL

19/31

*2054H

54HL

29/41

*2055H

55HL

39/51

*2056H

56HL

49/61

*2057H

57HL

59/71

*2058H

58HL

69/81

*2059H

59HL

79/91

*2060H

60HL

89/101

*Also available 41H through 60H thermometer ranges of 30/180°F and 60/220°F. To designate these temperatures use M for 30/180°F and H for 60/220°F after Catalog number.
Example: 2051HH would be -1/11 API thermometer range 60/220°F

 

 

 

IN-STEMS

API ASTM HYDROMETERS Subdivisions in 0.1° Thermometer in upper stem. Range 30/220 F 380mm Length

CAT.#

ASTM#

RANGE°

2071H

71H

-1/11

2072H

72H

9/21

2073H

73H

19/31

2074H

74H

29/41

 

 

 

API THERMO-HYDROMETER SHORT FORM

Thermometer in body 20/130°F Approx. 7 1/2" Length

CAT.#

DIVISIONS°

RANGE°

2500C

1.0

10/45

2501C

0.2

-1/11

2502C

0.2

9/21

2503C

0.2

19/31

2504C

0.2

29/41

2505C

0.2

39/51

2506C

0.2

49/61

2507C

0.2

59/71

2508C

0.2

69/81

2509C

0.2

79/91

3000

1.0

10/50

3001

1.0

25/65

3002

1.0

40/80

3003

1.0

80/120

 

 

API THERMO-HYDROMETER LONG FORM

Thermometer in Body (0/150°F) Approx. 15" Length

CAT. #

DIVISIONS

RANGE°

4000

0.2°

10/40

4001

0.1°

29/45

4002

0.2°

30/60

4003

0.2°

50/80

4004

0.2°

80/110

 

 

 

API THERMO-HYDROMETER SHORT FORM

Thermometer in body 20/130° F, Approx. 7 1/2" Length

CAT.#

DIVISIONS°

RANGE° 

5000

1.0

10/45

5001

1.0

45/90

5002

0.5

10/30

5003

0.5

20/40

5004

0.5

30/50

5005

0.5

40/60

5006

0.5

50/70

5007

0.5

60/80

5008

0.5

70/90

5009

0.5

80/101

 

 

 

API THERMO-HYDROMETER LONG FORM

Thermometer in Body (0/150° F) Appprox. 15" Length

CAT.#

DIVISIONS°

RANGE°

6000

0.5

10/45

6001

0.5

45/90

6002

0.2

10/30

6003

0.2

20/50

6004

0.2

30/50

6005

0.2

40/60

6006

0.2

50/70

6007

0.2

60/80

6008

0.2

70/90

6009

0.2

80/100

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