O’z DSt ISO 2808:2015 PDF

Full title and description

O’z DSt ISO 2808:2015 — Paints and varnishes. Determination of film thickness. Specifies methods for measuring the thickness of coating films (wet, dry and uncured powder layers) applied to substrates and provides guidance on field of application and precision for the methods listed.

Abstract

This national adoption (O’z DSt) reproduces the ISO technical content for the determination of film thickness of paints and varnishes. It describes multiple measurement principles and test procedures — including mechanical (comb/wheel/dial), gravimetric, optical/sectioning methods, magnetic/eddy-current and non‑contact techniques — and gives guidance for measurements on rough and wooden substrates. The document is intended to ensure repeatable, comparable film‑thickness determinations in laboratories and on site.

General information

• Status: Active (national adoption in Uzbekistan as O’z DSt ISO 2808:2015).
• Publication date: 2015 (standard edition/adoption year indicated in the designation).
• Publisher: O’z DSt (national standards body / Uzbekistan national adoption of ISO 2808).
• ICS / categories: 87.040 — Paints and varnishes.
• Edition / version: 2015 (national adoption of the ISO film‑thickness methods family).
• Number of pages: Not specified in public catalogue entries for the national PDF; typical ISO 2808 editions are ~60–70 pages (for comparison, the 2019 international edition is listed as 64 pages).

Scope

Specifies a range of methods for measuring coating thickness applied to substrates: wet‑film thickness (immediately after application), dry‑film thickness (after curing) and the thickness of uncured powder layers. For each method it provides the field of application and information on method precision; it also includes guidance for measuring on rough surfaces and on wooden substrates. The national publication aligns its scope with the corresponding ISO document.

Key topics and requirements

• Definitions: film thickness, wet film, dry film, minimum/maximum local film thickness and related terms.
• Wet‑film measurement methods (mechanical wheel/comb/dial gauges; gravimetric methods; photo/thermal methods) and their limitations.
• Dry‑film measurement methods: mechanical contact methods, gravimetric calculation, optical sectioning and interferometry, magnetic and eddy‑current techniques, and non‑destructive instrumental methods.
• Test procedure requirements: sample preparation, calibration, measurement locations and statistical reporting (mean, local minima/maxima, repeatability considerations).
• Special guidance for measurements on rough or textured substrates and on wooden substrates; annexes typically provide additional method notes and precision information.

These topics reflect the method taxonomy and application notes given in the ISO series for film‑thickness determination.

Typical use and users

Used by paint and coatings laboratories, quality control and inspection teams in coatings manufacture, surface‑treatment contractors, corrosion protection engineers, specifiers and third‑party inspectors. Typical uses include production QC, acceptance testing on site (e.g., for protective coatings on steel), verification of application thickness against specifications, and research or development work where precise coating thickness control is required.

Related standards

Related documents commonly referenced with ISO 2808 include ISO standards for density (ISO 2811 series), wetting/viscosity methods (e.g., ISO 2431), resistance and exposure tests for coatings (ISO 2810, ISO 6270, etc.), and national adoptions of ISO 2808. Note that the international ISO 2808 was revised in 2019; national adoptions may reference the 2007/2015 texts or the later 2019 revision depending on the issuing authority and date.

Keywords

film thickness; dry film thickness; wet film thickness; paints and varnishes; coatings; measurement methods; non‑destructive testing; magnetic gauges; eddy current; gravimetric method; sectioning; quality control.

FAQ

Q: What is this standard?

A: O’z DSt ISO 2808:2015 is the Uzbekistan national adoption of the ISO standard on determination of film thickness for paints and varnishes; it reproduces the international methods for measuring coating thickness.

Q: What does it cover?

A: It covers methods and procedures to measure wet‑film and dry‑film thickness and the thickness of uncured powder coatings, gives application guidance and precision information, and includes specialized guidance for rough and wooden substrates.

Q: Who typically uses it?

A: Coatings manufacturers, laboratory technicians, QC inspectors, specifiers, corrosion protection engineers and contractors who need repeatable, standardised film‑thickness measurements.

Q: Is it current or superseded?

A: The national designation is dated 2015. The international ISO 2808 was later revised (ISO 2808:2019); users should check whether a more recent national adoption or an updated edition (e.g., the 2019 international edition) has been formally adopted by their national standards body if they require the latest international text.

Q: Is it part of a series?

A: Yes — ISO 2808 is part of the ISO family of paints and varnishes test standards and is often used together with related ISO methods (for density, viscosity, resistance and exposure tests, etc.). National adoptions (O’z DSt) group similar paints & varnishes test standards under the same catalogue.

Q: What are the key keywords?

A: film thickness, wet film, dry film, coatings, paints and varnishes, measurement, non‑destructive, magnetic, eddy‑current, gravimetric, sectioning.