EN 60068-2-68:1996

Foreword
Introduction
Clause
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 Guidance
B Bibliography
Annex ZA (normative) Normative references to international
      publications with their corresponding European
      publications

Specifies test methods to determine the effects of dust and sand suspended in air, on electechnical products.