TS ISO 1998-2

TS ISO 1998-2 is a terminology standard for the petroleum industry that brings together the terms and definitions used to describe product properties and the test methods associated with those properties. As a terminology document, it supports a common technical language so that the same property or test concept is understood consistently across laboratories, refineries, specifications, and commercial documentation.

How property and test terms are organised

The standard addresses concepts used to name and describe the properties of petroleum products and the methods used to determine them. Its focus is on the meaning of the terms rather than on prescribing how any particular test must be carried out. In practical use, this helps keep references to properties such as density, flow behaviour, flash point, and related measurements clear and comparable.

GENERAL TECHNICAL CONTEXT: Petroleum products form a broad family of materials, including fuels, lubricants, and other refinery-derived products, each with properties that matter for handling, performance, and specification writing. Test-method vocabulary is important because the same numerical result can only be interpreted correctly when the property and the method behind it are identified precisely. Terminology standards do not replace test methods; they make the surrounding language consistent and easier to use.

• Provides a common vocabulary for describing petroleum product properties.
• Clarifies terms linked to test methods and measurement concepts.
• Supports consistent communication in laboratories, refineries, and trade.
• Helps reduce ambiguity when the same property is discussed across documents.