Glossary

Click on a letter to see an explanation of technical terms beginning with that letter.

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Sources:
Definitions in this glossary have been compiled based on DuPont's experience and technical expertise in protective apparel as well as a number of external sources, including: "Glossary of terms and definitions by the European Committee for Standardisation."

V
Term Explanation
Vapour An air dispersion of molecules of a substance that is normally a liquid or solid pressure.
Velcro Hook and loop fastener which may be produced in a way which is suitable for thermo-protective clothing. The tape should be a fabric made from NOMEX® fibres, the hooks and loops from a heavy-duty nylon. Garments made from one of the NOMEX® family of fibres which use Velcro tape should be designed to ensure that the tape is adequately covered to prevent the nylon components from igniting.
Ventilated protective clothing Protective clothing which is supplied with breathable air ensuring both air supply to the wearer and cooling by internal ventilation. In connection with protection against radioactive particles, this clothing provides protection against radioactive contamination for the respiratory tract and the whole body.
Viral penetration The penetration of a material by a virus and its carrying media.
Viral resistant Referring to materials that impede viral penetration under specified laboratory test conditions and detection methods.
Virus A DNA protein structure, encapsulated in a wrapping-protein, which lacks independent metabolism and is only able to replicate within a living host cell. Examples : Hepatitis, Aids, Ebola 
Viscose A cellulosic fibre, which in its untreated state is highly flammable. May however be chemically treated or chemically modified to increase its resistance to flame. A generally fine and porous fibre, viscose produces soft fabrics with a high level of moisture absorption.