IEC 60068-2-74:1999

Foreword
1 Scope
2 Normative references
3 Test fluid
    3.1 Specification for test fluid
    3.2 Precaution
4 Specimen
5 Cleaning
    5.1 Initial cleaning
    5.2 Intermediate cleaning
    5.3 Final cleaning
6 Initial examination
7 Testing
8 Occasional contamination (class A)
9 Intermittent contamination (class B)
10 Extended contamination (class C)
11 Final examination
12 Information to be given in the relevant specification
Annex A (informative) Guidance on the choice of test
fluids and specimens

IEC 60068-2-74:1999 Gives a method of test which provides a standard procedure to determine the ability of components, equipments or their constituent materials to withstand accidental contact with fluids, without being unacceptably affected. The fluids listed are representative of those commonly encountered in operational applications. It is not intended that a specimen should be exposed to all, or even any of them. Nor is the list intended to be complete; fluids not listed and for which a test is appropriate should be included in the relevant specification. Guidance is given in Annex A on the choice of test fluids, specimens and severities. These tests are not intended to demonstrate the suitability of components or equipments to perform in continuous contact with a fluid, e.g. an immersed fuel pump. Nor are they a test to demonstrate immunity from electrolytic corrosion.