GOST 3900-2022 PDF

Full title and description

GOST 3900-2022 — "Нефть и нефтепродукты. Методы определения плотности" (English: "Petroleum and petroleum products. Methods for determination of density"). The standard specifies accepted laboratory procedures for determining density and relative density of crude oil and petroleum products, establishing both areometric (hydrometer) and pycnometric (pycnometer) methods and related measurement conditions and calculations.

Abstract

GOST 3900-2022 defines two principal methods for measuring density and relative density of petroleum and petroleum products: Method 1 — areometer (hydrometer) method, and Method 2 — pycnometric (pycnometer) method. It sets requirements for sampling, test conditions (temperature control, vapor pressure limits), apparatus, calibration, calculation and presentation of results, and references metrological norms and related standards. The document replaces the previous edition (GOST 3900-85) and is intended to harmonize national practice with relevant ISO methods.

General information

• Status: Active (in force).
• Publication date: Registered/approved in 2022; enacted/put into effect 01 January 2023.
• Publisher: Adopted as an interstate GOST standard and approved by the competent standards authority (Rosstandart / interstate standards bodies).
• ICS / categories: 75.080 — Petroleum and petroleum products (oil industry measurement and testing).
• Edition / version: Edition 2022 (designation ГОСТ 3900-2022).
• Number of pages: Approximately 138–141 pages (commonly listed as ~140 pages in bibliographic records).

Scope

The standard applies to crude oil, liquid petroleum products and liquid mixtures of petroleum and non-petroleum origin whose Reid vapor pressure does not exceed the specified limits for safe hydrometer use. It covers laboratory determination of density and relative density using: (1) the areometer (hydrometer) method for liquids suitable for hydrometer measurement, and (2) the pycnometric method for higher-precision determinations or where hydrometers are unsuitable. The scope includes sampling considerations, temperature control, instrumentation calibration, calculation of results and reporting.

Key topics and requirements

• Two standardized measurement methods: areometric (hydrometer/areometer) and pycnometric (pycnometer) methods.
• Requirements for sampling, sample preparation and temperature control (use of thermostats, water baths, double-walled cylinders).
• Calibration, verification and traceability of measuring instruments and reference hydrometers/pycnometers.
• Limits on vapour pressure for safe areometer application and guidance for viscous or non-transparent liquids.
• Formulas and tables for converting measured densities to reference temperatures (e.g., 15 °C or 20 °C) and reporting of relative density.

Typical use and users

Primary users are analytical laboratories, oil refineries, fuel manufacturers, trade laboratories, quality control departments of petrochemical companies, regulatory bodies and testing services that require standardized density measurement for product specification, trade settlement, quality control, and compliance. The standard is used where consistent, traceable density data are required for custody transfer, specification compliance, mass/volume conversions and product classification.

Related standards

GOST 3900-2022 aligns with and references relevant national and international documents, including earlier national GOST versions (GOST 3900-85) and corresponding ISO methods (notably ISO 3675:1998 and ISO 3838:2004 as related or equivalent methods). It also cross-references measurement and metrology standards and other GOSTs governing sampling, temperature measurement and hydrometer use.

Keywords

density; relative density; petroleum; petroleum products; areometer; hydrometer method; pycnometer; pycnometric method; laboratory methods; measurement; metrology; oil industry; ГОСТ 3900-2022.

FAQ

Q: What is this standard?

A: GOST 3900-2022 is the national/interstate standard titled "Petroleum and petroleum products. Methods for determination of density," which prescribes standardized laboratory methods for determining density and relative density of crude oil and petroleum products.

Q: What does it cover?

A: It covers two principal measurement techniques (areometer/hydrometer and pycnometer), requirements for sampling and temperature control, instrumentation calibration and calculation/reporting procedures for density and relative density.

Q: Who typically uses it?

A: Analytical and commercial laboratories, oil producers and refiners, fuel testers, quality assurance teams, and regulatory or inspection bodies involved in testing and trade of petroleum products.

Q: Is it current or superseded?

A: It is the current (2022) edition that replaced the earlier GOST 3900-85; it entered into effect on 01 January 2023 following approval in 2022.

Q: Is it part of a series?

A: It belongs to the family of standards for petroleum and petroleum products (ICS 75.080) and is linked to other GOST/ISO documents on measurement methods, sampling and metrology; equivalents or related ISO standards include ISO 3675 and ISO 3838.

Q: What are the key keywords?

A: Density, relative density, petroleum, petroleum products, areometer, pycnometer, laboratory methods, metrology, ГОСТ 3900-2022.