Quite often, I see domestic ladders used in industrial environments, for which they are totally unsuited. When choosing a ladder, look at the label, as shown above.
Class 1 Industrial - This is the type best suited for industrial use.
Class EN131 - This is suitable for light industrial use and heavy domestic DIY work.
Class III Domestic - This is exactly all that it should be used for. It is not substantial enough
for any industrial use.