skip_navigation

Nano materials

Natural, incidental or manufactured material containing particles, in an unbound state or as an aggregate or as an agglomerate and where, for 50% or more of the particles in the number size distribution, one or more external dimensions is in the size rang

Nanofilter

see HEPA filter

Nanometre

Millionth part of one millimetre [nm]

Needle felt

Needled, solidified fibre fleece

Nekal

Outdated for leakage test / liquid leak detector

NIOSH

National Institute for Occupational Health

NOEL

No Observed Effect Level

Nomex®

Aromatic polyamide (m-Aramid)

Non-ferrous metal

General term for different metals

Nozzle holder

Part of the cleaning equipment

Nozzle tube

Equipment of the cleaning system that is rigidly installed and removable.