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PR NF U26-140-2 ; PR NF EN ISO 19932-2
Equipment for crop protection - Knapsack sprayers - Part 2: test methods
PR NF U26-140-3 ; PR NF EN ISO 19932-3
Equipment for crop protection - Knapsack sprayers - Part 3: Inspection of knapsack sprayers in use
PR NF U34-135-2 ; PR NF EN ISO 11680
Machinery for forestry - Safety requirements and testing for pole-mounted powered pruners - Part 2 : machine for use with back-pack power source.
PR NF U42-041-3 ; PR NF EN 12944-3
Fertilizers and liming materials - Vocabulary - Part 3: Terms relating to liming materials
PR NF U42-157 ; PR NF EN 18103
Inorganic fertilizers - Determination of nutrient polymers nitrogen in the presence of other nitrogenous forms
PR NF U44-051/A4
Organic soil improvers - Designations, specifications and marking
PR NF U44-096 ; PR NF EN 14069
Liming materials - Description and minimum requirements.
PR NF U44-308 ; PR NF EN 13037
Soil improvers and growing media - Determination of pH.
PR NF U44-309 ; PR NF EN 13038
Soil improvers and growing media - Determination of electrical conductivity.
PR NF U44-314 ; PR NF EN 15761
Pre-shaped growing media - Determination of length, width, height, volume and bulk density.
