Значење и сврха
4.1 Вода узрокује деградацију премаза, so understanding how the coating is waterproof helps to predict its service life. A water mist test failure can be caused by a variety of factors, including defects in the coating itself, contamination of the substrate, or inadequate surface treatment. Стога, the test can be used to evaluate individual coatings or complete coating systems.

4.2 Water mist testing is used for coating and substrate treatment research and development, specification acceptance and quality control in manufacturing. These tests typically lead to a determination of pass or failure, but can also measure the extent of failure. If there is no evidence of water-related failure after a specified time period, the coating system is considered to have passed.

4.3 Until the quantitative relevance of the coating or coating system is determined, the results obtained using water spray tests in accordance with this protocol should not be expressed as equivalent to a period of exposure to water in the natural environment.

4.4 The test setup is similar to the setup used in Practice B117, and it is feasible to convert the setup from salt spray testing to water spray testing. When converting from salt spray to water spray testing, care should be taken to remove all traces of salt from the cabinet and liquid storage tank.

АСТМ Д 1735-2021 “Determination of Water Resistance of Coatings by Water Mist Meter”

Обим
1.1 This practice covers the fundamentals and operating procedures for testing the water resistance of coatings in equipment similar to salt spray testing.

1.2 This practice is limited to methods of obtaining, measuring and controlling conditions and procedures for water mist testing. It does not specify sample preparation, specific test conditions, or evaluation of results.

Белешка 1: Alternative practices for testing paint for water resistance include D870, D2247 and D4585.

1.3 Вредности изражене у СИ јединицама сматрају се стандардима. Вредности дате у заградама су само за референцу.

АСТМ Д 1735-2021 “Determination of Water Resistance of Coatings by Water Mist Meter”

1.4 Овај стандард није намењен решавању свих безбедносних питања, ако их има, повезана са његовом употребом. Одговорност корисника овог стандарда је да успостави одговарајућу безбедност, здравствене и еколошке праксе и да се утврди применљивост регулаторних ограничења пре употребе.

1.5 Овај међународни стандард је развијен у складу са међународно признатим принципима стандардизације утврђеним у Одлуци о принципима за израду међународних стандарда., Смернице и препоруке које је издао Комитет за техничке баријере у трговини Светске трговинске организације.