KOEHLER Density, Relative Density ( Specific Gravity) , or API Gravity - Hydrometers and Thermohydrometers

Specifications
Conforming to the specifications of: ASTM E100

Applicable Test Method Standards
ASTM D287, D1298, D6074, D6158; API MPMS Chapter 9.1; IP 160; ISO 3675; DIN 51757

API Gravity Hydrometers
Standard temperature 60° F, subdivisions 0.1° API, length 330mm
Catalog
Number ASTM Hydrometer No. Nominal API Gravity Range, deg.
251-000-01H 1H – 1 to + 11
251-000-02H 2H 9 to 21
251-000-03H 3H 19 to 31
251-000-04H 4H 29 to 41
251-000-05H 5H 39 to 51
251-000-06H 6H 49 to 61
251-000-07H 7H 59 to 71
251-000-08H 8H 69 to 81
251-000-09H 9H 79 to 91
251-000-10H 10H 89 to 101

Specific Gravity Hydrometers
Standard temperature 60/ 60° F, subdivisions 0.0005, length 330mm
Catalog
Number ASTM Hydrometer No. Nominal Specific Gravity Range
251-000-82H 82H 0.650 to 0.700
251-000-83H 83H 0.700 to 0.750
251-000-84H 84H 0.750 to 0.800
251-000-85H 85H 0.800 to 0.850
251-000-86H 86H 0.850 to 0.900
251-000-87H 87H 0.900 to 0.950
251-000-88H 88H 0.950 to 1.000
251-000-89H 89H 1.000 to 1.050
251-000-90H 90H 1.050 to 1.100
alt

API Gravity Hydrometers
Standard temperature 60° F, subdivisions, 0.1° API, length 330mm
Catalog
Number ASTM Hydrometer No. Nominal API Gravity Range, deg.
251-000-21H 21H 0 to 6
251-000-22H 22H 5 to 11
251-000-23H 23H 10 to 16
251-000-24H 24H 15 to 21
251-000-25H 25H 20 to 26
251-000-26H 26H 25 to 31
251-000-27H 27H 30 to 36
251-000-28H 28H 35 to 41
251-000-29H 29H 40 to 46
251-000-30H 30H 45 to 51
251-000-31H 31H 50 to 56
251-000-32H 32H 55 to 61
251-000-33H 33H 60 to 66
251-000-34H 34H 65 to 71
251-000-35H 35H 70 to 76
251-000-36H 36H 75 to 81
251-000-37H 37H 80 to 86
251-000-38H 38H 85 to 91
251-000-39H 39H 90 to 96
251-000-40H 40H 95 to 101

API Gravity Thermohydrometers - Thermometer in Body
Standard temperature 60° F, subdivisions 0.1° API, length 380mm, thermometer scale ° F 0-150 ( designation L) , 30 to 180 ( designation M) , 60 to 220 ( designation H)
Catalog
Number ASTM Thermohydrometer No. Nominal API Gravity Range, deg.
251-000-51HH 51HH – 1 to 11
251-000-51HL 51HL – 1 to 11
251-000-52HH 52HH 9 to 21
251-000-52HL 52HL 9 to 21
251-000-53HM 53HM 19 to 31
251-000-53HL 53HL 19 to 31
251-000-54HM 54HM 29 to 41
251-000-54HL 54HL 29 to 41
251-000-55HL 55HL 39 to 51
251-000-56HL 56HL 49 to 61
251-000-57HL 57HL 59 to 71
251-000-58HL 58HL 69 to 81
251-000-59HL 59HL 79 to 91
251-000-60HL 60HL 89 to 101

API Gravity Thermohydrometers Thermometer in Stem
Standard temperature 60° F, subdivisions 0.1° API, length 380mm, temperature scale ° F 30-220
Catalog
Number ASTM Thermohydrometer No. Nominal API Gravity Range, deg.
251-000-71H 71H – 1 to 11
251-000-72H 72H 9 to 21
251-000-73H 73H 19 to 31
251-000-74H 74H 29 to 41

Specific Gravity Hydrometers
Standard temperature 60/ 60° F, subdivisions 0.001 length 260mm
Catalog
Number ASTM Hydrometer No. Nominal Specific Gravity Range
251-000-102H 102H 0.650 to 0.700
251-000-103H 103H 0.700 to 0.750
251-000-104H 104H 0.750 to 0.800
251-000-105H 105H 0.800 to 0.850
251-000-106H 106H 0.850 to 0.900
251-000-107H 107H 0.900 to 0.950
251-000-108H 108H 0.950 to 1.000
251-000-125H 125H 1.000 to 1.050
251-000-126H 126H 1.050 to 1.100
251-000-127H 127H 1.100 to 1.150
251-000-128H 128H 1.150 to 1.200
251-000-129H 129H 1.200 to 1.250
251-000-130H 130H 1.250 to 1.300
251-000-131H 131H 1.300 to 1.350
251-000-132H 132H 1.350 to 1.400
251-000-133H 133H 1.400 to 1.450
251-000-134H 134H 1.450 to 1.500
251-000-135H 135H 1.500 to 1.550
251-000-136H 136H 1.550 to 1.600
251-000-137H 137H 1.600 to 1.650
251-000-138H 138H 1.650 to 1.700
251-000-139H 139H 1.700 to 1.750
251-000-140H 140H 1.750 to 1.800
251-000-141H 141H 1.800 to 1.850

ASTM Metric Thermohydrometers
Standard temperature 15° C, subdivisions 0.5kg/ m3, length 380mm, thermometer scale ° C: – 20 to + 65 ( designation L) , 0 to 85 ( designation M) , 20 to 105 ( designation H)
Catalog
Number ASTM Thermohydrometer No. Density, Range kg/ m3
251-000-300HL 300HL 600 to 650
251-000-301HL 301HL 650 to 700
251-000-302HL 302HL 700 to 750
251-000-302HM 302HM 700 to 750
251-000-303HL 303HL 750 to 800
251-000-303HM 303HM 750 to 800
251-000-304HL 304HL 800 to 850
251-000-304HM 304HM 800 to 850
251-000-305HL 305HL 850 to 900
251-000-305HM 305HM 850 to 900
251-000-306HL 306HL 900 to 950
251-000-306HM 306HM 900 to 950
251-000-307HL 307HL 950 to 1000
251-000-307HH 307HH 950 to 1000
251-000-308HH 308HH 1000 to 1050
251-000-308HL 308HL 1000 to 1050
251-000-309HH 309HH 1050 to 1100
251-000-309HL 309HL 1050 to 1100