API/ASTM Hydrometers

All API/ASTM Hydrometers are made in accordance with API specifications and calibrated to API scale Modulus 141.5 at 60 degrees F. All API/ASTM Hydrometers are of precision grade. The API Hydrometers are constructed with a solid alloy ballast and designed to permit quick penetration to the settling point, creating no air bubbles. The API Hydrometer scale is sealed in place by a red glass strap fused to the stem of the hydrometer and the top of the gravity scale even with the last number line.

Certified API Hydrometer
Certified API/ASTM Hydrometers are available upon request. API Hydrometers are certified at three points on the hydrometer scale as specified by NIST (formerly NBS). On the combined form API/ASTM Hydrometer, the thermometer is provided with a 60 degree F test point correction. Each API/ASTM Hydrometer is accompanied by a document of certification that includes the correction of each point tested.

Hydrometers, API, Combined, Thermometer in the bottom. Length 15"
Catalog Number	Range Deg.	Division	Temp. Range F
403A021	-1 to 11	0.1	0 to 150
403A022	9 to 21	0.1	0 to 150
403A023	19 to 31	0.1	0 to 150
403A024	29 to 41	0.1	0 to 150
403A025	39 to 51	0.1	0 to 150
403A026	49 to 61	0.1	0 to 150
403A027	59 to 71	0.1	0 to 150
403A028	69 to 81	0.1	0 to 150
403A029	79 to 91	0.1	0 to 150
403A030	89 to 101	0.1	0 to 150
403A031	19 to 45	0.2	0 to 150
403A032	29 to 45	0.1	0 to 150
403A033	10 to 30	0.2	0 to 150
403A034	20 to 40	0.2	0 to 150
403A035	30 to 50	0.2	0 to 150
403A036	40 to 60	0.2	0 to 150
403A037	50 to 70	0.2	0 to 150
403A038	60 to 80	0.2	0 to 150
403A039	70 to 90	0.2	0 to 150
403A040	80 to 100	0.2	0 to 150
403A041	10 to 45	0.5	0 to 150
403A042	45 to 90	0.5	0 to 150
403A043	30 to 90	1.0	0 to 150
403A044	10 to 100	1.0	0 to 150
403A045	-1 to 11	0.1	30 to 220
403A046	9 to 21	0.1	30 to 220
403A047	19 to 31	0.1	30 to 220
403A048	29 to 41	0.1	30 to 220
403A049	39 to 51	0.1	30 to 220
403A050	49 to 61	0.1	30 to 220
403A051	59 to 71	0.1	30 to 220
403A052	69 to 81	0.1	30 to 220
403A053	79 to 91	0.1	30 to 220

Hydrometers, API Combination form, Thermometer in Stem. Length 15"
Catalog Number	Range Deg.	Division	Temp. Range F
403A054	-1 to 11	0.1	30 to 220
403A055	9 to 21	0.1	30 to 220
403A056	19 to 31	0.1	30 to 220
403A057	29 to 41	0.1	30 to 220
403A058	39 to 51	0.1	30 to 220
403A059	49 to 61	0.1	30 to 220
403A060	10 to 30	0.2	30 to 220
403A061	20 to 40	0.2	30 to 220
403A062	30 to 50	0.2	30 to 220

Hydrometers, API, Combination form, Thermometer in the bottom. Length 7.5"
Catalog Number	Range Deg.	Division	Temp. Range F
403A063	-1 to 11	0.2	20 to 130
403A064	9 to 21	0.2	20 to 130
403A065	19 to 31	0.2	20 to 130
403A066	29 to 41	0.2	20 to 130
403A067	39 to 51	0.2	20 to 130
403A068	49 to 61	0.2	20 to 130
403A069	59 to 71	0.2	20 to 130
403A070	69 to 81	0.2	20 to 130
403A071	79 to 91	0.2	20 to 130
403A072	89 to 101	0.2	20 to 130
403A073	10 to 30	0.5	20 to 130
403A074	20 to 40	0.5	20 to 130
403A075	30 to 50	0.5	20 to 130
403A076	40 to 60	0.5	20 to 130
403A077	50 to 70	0.5	20 to 130
403A078	60 to 80	0.5	20 to 130
403A079	70 to 90	0.5	20 to 130
403A080	80 to 100	0.5	20 to 130
403A081	10 to 45	1.0	20 to 130
403A082	45 to 90	1.0	20 to 130

Hydrometers, API, Plain, Length 13"

Hydrometers, API, Plain, Length 13"
Catalog Number	Range Deg.	Division
403A001	-1 to 11	0.1
403A002	9 to 21	0.1
403A003	19 to 31	0.1
403A004	29 to 41	0.1
403A005	39 to 51	0.1
403A006	49 to 61	0.1
403A007	59 to 71	0.1
403A008	69 to 81	0.1
403A009	79 to 91	0.1
403A010	89 to 101	0.1

Hydrometers, Specific Gravity LPG. Combined form. ASTM No. 101H. 360mm
Catalog Number	Range Deg.	Division	Temp. Range F
*403A093	0.500 to 0.650	0.001	30 to 90
403A094	0.500 to 0.650	0.001	0 to 120
403A235	0.450 to 0.650	0.002	30 to 120

* For use in 407B046, Pressure Hydrometer Cylinder

Hydrometers, Brine
Catalog Number	Range Deg.	Division	Length
403A095	0 to 100%	1%	12"

Hydrometers, Specific Gravity, Plain form for general testing of heavy liquids. Temperature of Standardization 60/60F
Catalog Number	Range Deg.	Division	Length
403A090	1.000 to 1.220	.002	12"
403A091	1.000 to 2.000	.01	12"

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