SN EN 60068-2-68 : 1996

Introduction
1 General
1.1 Scope
1.2 Description of Test L
2 Normative references
3 Definitions
4 Test La1: non-abrasive fine dust
4.1 Method La1: cyclic air pressure
4.2 Method La2: constant air pressure
4.3 Guidance for test La
5 Test Lb: free settling dust
5.1 Object
5.2 Method Lb
5.3 Guidance for test Lb
6 Test Lc: blown dust and sand
6.1 Method Lc1: recirculating chamber
6.2 Method Lc2: free blowing dust
6.3 Guidance for test Lc
Figures
Annexes
A (informative) Guidance
B (informative) Bibliography
ZA (normative) Normative references to international
     publications with their corresponding European
     publications