Introducing the ROBINSON Hydrometer, API Combined, with a built-in thermometer at the bottom — a precision instrument crafted for oil testing professionals who demand dependable, repeatable results.
Designed to meet API oil testing specifications, this thermohydrometer blends accurate gravity measurements with on-site temperature reading in a single, durable tool. At 15 inches in length, it delivers clear visibility and precise reach across a variety of sample vessels.
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API-compliant accuracy — calibrated to the API scale with a Modulus of 141.5 at 60°F for exceptional reading precision.
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Solid alloy ballast — engineered for quick penetration to the setting point and to minimize air bubble formation for stable readings.
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Built-in thermometer — thermometer integrated at the bottom for simultaneous temperature measurement without accessories.
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Certification options — available on request, including a certificate with corrections for each tested point.
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NIST-certified — calibrated at three points on the gravity scale to meet top-level traceability standards.
Specifications: Length 15", API range 59–71, Division 0.1, Temperature range 0–150. This tool delivers accurate oil density measurements essential for quality control across industries, while streamlining workflows with its dual-function design.
Ideal for laboratories performing oil analysis, quality assurance teams monitoring product consistency, and field technicians needing reliable on-site testing — the ROBINSON Hydrometer is built to perform where precision matters most. The clear glass body and meticulously etched API scale convey reliability at a glance, reflecting ROBINSON’s long-standing reputation for precision instruments you can trust.
