GOST 33-2016 PDF

Full title and description

GOST 33-2016 — Petroleum and petroleum products. Transparent and opaque liquids. Determination of kinematic and dynamic viscosity. The standard specifies laboratory methods for measuring kinematic viscosity of oils and liquid petroleum products (transparent and opaque liquids) by the timed flow of a defined volume through calibrated glass capillary viscometers; dynamic viscosity is obtained by multiplying kinematic viscosity by density.

Abstract

This national/interstate standard (GOST 33-2016) defines apparatus, sample preparation, test temperatures, procedural steps for both transparent and opaque liquids, calculation and reporting requirements, and precision limits for kinematic and dynamic viscosity determinations used in quality control, conformity assessment and laboratory testing of petroleum products.

General information

• Status: In force / introduced as a national (interstate) standard; replaced GOST 33-2000.
• Publication date: Approved by Rosstandart (order) 27 April 2017; introduced into force 1 July 2018.
• Publisher: Federal Agency on Technical Regulating and Metrology (Rosstandart) — published as a межгосударственный (interstate) standard adopted for use in the Russian Federation and participating states.
• ICS / categories: 75.080 (Petroleum and related technologies).
• Edition / version: GOST 33-2016 (current edition introduced 2018; text has subsequent amendments/corrections).
• Number of pages: 44 pages (typical published text count varies by publisher/format).

Scope

GOST 33-2016 establishes laboratory procedures for determining kinematic viscosity of crude oil and liquid petroleum products (both transparent and opaque) using calibrated glass capillary viscometers and also describes a calculation route to obtain dynamic viscosity from measured kinematic viscosity and density. The standard excludes bitumen and is intended for test laboratories, production quality control and conformity assessment where viscosity is a regulated or quality parameter.

Key topics and requirements

• Definition of method principle: timed efflux through a calibrated capillary viscometer and calculation of kinematic viscosity.
• Apparatus and calibration: specified capillary viscometers, temperature-controlled thermostats, timing devices and auxiliary measuring equipment with defined accuracy.
• Sample handling: sampling rules, filtration for solids, preconditioning and temperature equilibration for reproducible results.
• Test temperatures and ranges: specified temperatures for different product types and thermostating tolerances; procedures for opaque liquids (special handling and measurement steps).
• Calculation and reporting: kinematic viscosity reporting units (mm²/s), conversion to dynamic viscosity using measured density, uncertainty/precision statements and result-recording formats.
• Mandated precision and repeatability requirements, and requirements for verification/calibration of viscometers.

Typical use and users

Laboratories in oil refineries, fuel and lubricant production plants, independent testing and certification bodies, research institutes and regulatory agencies use this standard for routine QC, acceptance testing, method validation and compliance testing of petroleum and related liquid products where viscosity is a control parameter.

Related standards

GOST 33-2016 replaces GOST 33-2000 and contains normative references to other method and sampling standards used in petroleum testing (for example, national methods for sampling and density measurement cited within the text). It is used alongside related petroleum test standards and national/regional technical regulations that reference viscosity test methods. The standard has received subsequent amendments and editorial corrections (see amendments/changes and official IUS notices).

Keywords

viscosity, kinematic viscosity, dynamic viscosity, capillary viscometer, petroleum, oil products, transparent liquids, opaque liquids, viscosity measurement, thermostating, test method

FAQ

Q: What is this standard?

A: GOST 33-2016 is the inter/state standard that defines laboratory methods for determining kinematic and dynamic viscosity of crude oil and liquid petroleum products (transparent and opaque liquids).

Q: What does it cover?

A: It covers apparatus, calibration, sample preparation, detailed test procedures for transparent and opaque liquids, calculation of dynamic viscosity from kinematic viscosity and density, precision limits, and reporting requirements. It does not apply to bitumen.

Q: Who typically uses it?

A: Test and calibration laboratories, refinery and lubricant plant QC units, certification bodies and regulatory authorities that need standardized, reproducible viscosity measurements for product specification, quality control and conformity assessment.

Q: Is it current or superseded?

A: The 2016 edition (introduced 1 July 2018) is the active edition that replaced GOST 33-2000; the text has received official amendments and a correction published in Federal/official notices (including a corrective amendment entered into force 14 February 2024). Users should consult the latest national/information bulletins for any recent corrections or amendments before relying on the procedure.

Q: Is it part of a series?

A: It belongs to the family of petroleum testing standards (ICS 75.080) and is typically used in conjunction with other sampling, density and product-specific test methods referenced in its normative clauses.

Q: What are the key keywords?

A: Kinematic viscosity; dynamic viscosity; capillary viscometer; petroleum products; transparent and opaque liquids; viscosity measurement; thermostating; test precision.