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This document applies for - fume cupboards for high heat load - fume cupboards for handling of perchloric acid - fume cupboards for handling of hydrofluoric acid - fume cupboards for high heat load in combination with acidic digestions. This document applies in conjunction with EN 14175-1 to EN 14175-4 and, where appropriate, to EN 14175-6 and specifies supplementary information relevant to vocabulary, safety and performance requirements, type test methods, on-site test methods and marking of the listed special purpose fume cupboards. NOTE EN 14175-6 applies for variable air volume fume cupboards. Experience shows that fume cupboards for high heat load offer much safer working conditions when operated with fixed air volume flow. This document does not apply for microbiological safety cabinets, recirculatory filtration fume cupboards and fume cupboards for carrying out work on radioactive materials.