ROBINSON presents the API Combined Hydrometer with a built‑in thermometer, a precision instrument engineered for rigorous oil testing and dependable results. At 15" long, this hydrometer is designed for stable handling and accurate readings across the API gravity range you rely on.
Engineered to meet API specifications, this hydrometer features a precise 70 to 90 API scale with 0.1 divisions and a modulus of 141.5 at 60F, delivering reliable density measurements every time. A robust alloy ballast provides quick penetration to the setting point while minimizing trapped air bubbles, ensuring consistency across tests.
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Built-in thermometer located at the bottom for on‑the‑spot temperature correction and streamlined analysis.
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Solid alloy ballast ensures fast, stable readings with minimal interference from air pockets.
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Certification options available on request; NIST certified thermohydrometers come with a three‑point gravity scale certificate detailing corrections at each tested point.
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Versatile application ideal for laboratories, educational settings, and quality control in manufacturing where precise density measurements matter.
With a clear, sturdy glass body and precisely etched scales, the ROBINSON Hydrometer delivers clarity and reliability in every measurement. Upgrade your oil testing workflow with a trusted instrument designed for accuracy, efficiency, and professional results.
