ISO 2812-1974 rus PDF

Full title and description

Ст ISO 2812-1974 rus — Paints and varnishes — Determination of resistance to liquids. Russian-language edition/translation of the original ISO 2812:1974 first edition; specifies general test methods for evaluating the resistance of paint and varnish films to the action of liquids.

Abstract

This standard (ISO 2812:1974) defines general procedures for exposing coated test panels to liquids and for evaluating the effect of exposure on the coating and, where appropriate, on the substrate. It was published as the first edition in February 1974 and later revised by a multi-part ISO 2812 series (parts dealing with immersion, absorbent-medium and spotting methods). The original 1974 edition has been withdrawn and superseded by later, part-based revisions.

General information

• Status: Withdrawn (superseded by later ISO 2812 parts).
• Publication date: 1 February 1974 (first edition).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 87.040 — Paints and varnishes.
• Edition / version: Edition 1 (1974).
• Number of pages: 3 pages.

(Key bibliographic facts above are taken from ISO's record for ISO 2812:1974.)

Scope

ISO 2812:1974 sets out general methods for determining the resistance of paint and varnish films to liquids. The standard describes ways to expose coated panels to test liquids (immersion and local exposure) and gives guidance on inspection and evaluation of coating damage. The 1974 document was subsequently replaced by a part-based series (ISO 2812-1, -2, -3, -4, -5) that expands and clarifies the methods (immersion in liquids other than water; water immersion; absorbent-medium method; spotting; temperature‑gradient oven method).

Key topics and requirements

• General test principles for exposing coatings to liquids (immersion and local application).
• Descriptions of three principal exposure approaches used in the series: immersion (single‑ or two‑phase), absorbent‑medium method, and spotting/spot‑application methods.
• Preparation and conditioning of test panels and substrates (panel preparation, spacing, electrical insulation where required).
• Use of fixtures and accessories (for example rods for Method 1 to avoid edge effects) and recommended specimen dimensions.
• Evaluation criteria and assessment procedures (visual criteria agreed between parties; criteria often subjective and agreed in advance).
• Reporting and test record requirements (exposure time, test liquid, recovery period, and method of inspection/removal of coating where applicable).

These topics reflect the content and evolution of ISO 2812 from the 1974 edition through the later part-based revisions.

Typical use and users

Used by paint and varnish manufacturers, independent test laboratories, quality assurance and R&D groups, coating formulators, specification writers and purchasers who need to evaluate chemical or liquid resistance of coating systems. The withdrawn 1974 edition is of historical/reference value; contemporary testing should follow the current part(s) of ISO 2812 appropriate to the liquid and exposure mode.

Related standards

ISO 2812:1974 has been superseded and incorporated into the ISO 2812 series. Key related standards include: ISO 2812-1 (general/immersion methods) — later editions 1993, 2007 (withdrawn) and 2017 (current for Part 1); ISO 2812-2 (water immersion method); ISO 2812-3 (absorbent-medium method); ISO 2812-4 (spotting methods); ISO 2812-5 (temperature-gradient oven method). For testing today, use the appropriate active part and edition of ISO 2812.

Keywords

paints, varnishes, coatings, chemical resistance, resistance to liquids, immersion test, spotting, absorbent medium, test methods, ISO 2812, film durability.

FAQ

Q: What is this standard?

A: ISO 2812:1974 is the first-edition International Standard titled "Paints and varnishes — Determination of resistance to liquids" (Russian edition/translation referenced as Ст ISO 2812-1974 rus). It established general methods for liquid‑resistance testing of coatings.

Q: What does it cover?

A: It covers general procedures for exposing coated test panels to liquids (immersion and local exposure), specimen preparation, test apparatus and basic evaluation criteria; later the subject was expanded into a multi‑part ISO 2812 series for more specific methods.

Q: Who typically uses it?

A: Coating manufacturers, formulation and R&D teams, independent test labs, QC/QA departments, specifiers, and purchasers concerned with the liquid resistance of coatings. For actual testing, users should adopt the current, active part(s) of ISO 2812.

Q: Is it current or superseded?

A: The 1974 ISO 2812 edition is withdrawn and has been superseded by the ISO 2812 series (for example ISO 2812-1:1993 and later ISO 2812-1:2017 for Part 1). Use the relevant current part and edition for testing.

Q: Is it part of a series?

A: Yes — the subject now exists as a multi-part series (ISO 2812-1 through ISO 2812-5), each part addressing a specific test method or exposure condition (immersion, water immersion, absorbent-medium, spotting, temperature‑gradient oven).

Q: What are the key keywords?

A: Paints, varnishes, coatings, resistance to liquids, chemical resistance, immersion, spotting, absorbent medium, ISO 2812.