NF C23-241-2-2:2001 Electrical appartus for use in the presence of combustible dust - Part 2 : test methods - Section 2 : method for determining the electrical resistivity of dust in layers.
2001NF C23-241-2-2:2001 Electrical appartus for use in the presence of combustible dust - Part 2 : test methods - Section 2 : method for determining the electrical resistivity of dust in layers.