Spesifikasi ASTM Hydrometer (API - Grade):
Ref. temperature: 60 °F
Scale division: 0.1 °API
Error limit: ± 0.1 °API
Without thermometer
Total length (L): 330 mm
| Type | Measuring Raange API | Art. No. |
| 1H-62 | -1+11 | 3202001 |
| 2H-62 | 9+21 | 3202002 |
| 3H-62 | 19+31 | 3202003 |
| 4H-62 | 29+41 | 3202004 |
| 5H-62 | 39+51 | 3202005 |
| 6H-62 | 49+61 | 3202006 |
| 7H-62 | 59+71 | 3202007 |
| 8H-62 | 69+81 | 3202008 |
| 9H-62 | 79+91 | 3202009 |
| 10H-62 | 89+101 | 3202010 |
| 11H-03 | 37+49 | 3202011 |
| 12H-03 | 64+76 | 3202012 |
Ref. temperature: 60 °F
Scale division: 0.1 °API
Error limit: ± 0.1 °API
Without thermometer
Total length (L): 160 mm
| Type | Measuring Range API | Art. No. |
| 21H-62 | 0+6 | 3202051 |
| 22H-62 | 5+11 | 3202052 |
| 23H-62 | 10+16 | 3202053 |
| 24H-62 | 15+21 | 3202054 |
| 25H-62 | 20+26 | 3202055 |
| 26H-62 | 25+31 | 3202056 |
| 27H-62 | 30+36 | 3202057 |
| 28H-62 | 35+41 | 3202058 |
| 29H-62 | 40+46 | 3202059 |
| 30H-62 | 45+51 | 3202060 |
| 31H-62 | 50+56 | 3202061 |
| 32H-62 | 55+61 | 3202062 |
| 33H-62 | 60+66 | 3202063 |
| 34H-62 | 65+71 | 3202064 |
| 35H-62 | 70+76 | 3202065 |
| 36H-62 | 75+81 | 3202066 |
| 37H-62 | 80+86 | 3202067 |
| 38H-62 | 85+91 | 3202068 |
| 39H-62 | 90+96 | 3202069 |
| 40H-62 | 95+101 | 3202070 |
Ref. temperature: 60 °F
Scale division: 0.1 °API
Error limit: ± 0.1 °API
With thermometer in stem: +30+220 °F in 2 °F
Filling: Hg
Error limit: ± 1 °F
Total length (L): 380 mm
| Type | Measuring Range API | Art. No. |
| 71H-62 | -1+11 | 3212051 |
| 72H-62 | 9+21 | 3212052 |
| 73H-62 | 19+31 | 3212053 |
| 74H-62 | 29+41 | 3212054 |
Mercury-free version available on request: with blue organic filling
(similar to ASTM), thermometer error limit: ± 2 °F
Alat Laboratorium Umum.