Product Description
Crude oil and petroleum products are bought, sold and blended by API gravity, so accurate readings have real commercial weight. These API thermo-hydrometers read API degrees and temperature together, letting terminal, refinery and lab staff correct readings to 60°F and report density on the industry's standard scale.
This listing is for catalog number 6756HTS: API ASTM Hydrometer, with Thermometer, ASTM 56H, API 49 to 61°. The API scale relates to specific gravity by the formula API = 141.5 / SG - 131.5, both at 60°F. Each glass hydrometer is 380 mm long with a body thermometer reading 0 to 150°F and a safety blue fill. Models carry ASTM designations and cover successive 12-degree API segments, and all are suitable for certification as NIST-traceable primary references. Order it from LIGHT LABS and keep your bench running smoothly.
Key Features
- API gravity scale – Standard petroleum density scale.
- Built-in thermometer – 0 to 150°F body thermometer for corrections.
- ASTM designations – Choose by ASTM number for your method.
- Safety blue fill – Mercury-free thermometer liquid.
- Certifiable – Suitable for NIST-traceable certification.
Specifications
| Catalog Number | 6756HTS |
| Brand | Heathrow Scientific |
| Description | API ASTM Hydrometer, with Thermometer, ASTM 56H, API 49 to 61° |
| Sold As | Each |
| Scale | API gravity |
| Formula | °API = 141.5 / SG - 131.5 (at 60°F) |
| Thermometer range | 0 to 150°F |
| Thermometer fill | Safety blue liquid |
| Range options | API 9 to 71° in 12° segments |
| Length | 380 mm (15 in) |
| Certification | Suitable for NIST-traceable certification |
Available Options
- 6752HTS – API ASTM Hydrometer, with Thermometer, ASTM 52H, API 9 to 21°
- 6753HTS – API ASTM Hydrometer, with Thermometer, ASTM 53H, API 19 to 31°
- 6754HTS – API ASTM Hydrometer, with Thermometer, ASTM 54H, API 29 to 41°
- 6755HTS – API ASTM Hydrometer, with Thermometer, ASTM 55H, API 39 to 51°
- 6757HTS – API ASTM Hydrometer, with Thermometer, ASTM 57H, API 59 to 71°
Applications
- Crude oil API gravity
- Fuel and refined product testing
- Petroleum terminal sampling
- Refinery QC labs
