Click on a letter to see an explanation of technical terms beginning with that letter.
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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."
|Laundering||Garments made from NOMEX® and NOMEX®/KEVLAR® fibre blends may be commercially laundered or dry-cleaned. For further information, please follow the instructions of the garment manufacturer.|
|Level of performance||See Performance level.|
|Lightfastness||Measure of the extent to which the colour of any material changes after exposure to simulated daylight. In Europe, lightfastness is generally measured on a 1 (poor) to 8 (good) blue scale and in the United States on a 1 to 5 grey scale. ISO 105 B02 is generally used to measure lightfastness.|
|Limited Flame Spread||CEN test method for evaluating the flammability of protective clothing. EN 532 is based on the vertical flame test procedure.|
|Limited protection against liquid mist||Refers to Type 6 Chemical Protective Clothing according to the European norms. Such clothing is supposed to give protection only to a low-level liquid exposure.|
|Limited-use chemical protective clothing||Chemical protective clothing for limited duration of usw, i. e. to be worn until hygienic cleaning becomes necessary or chemical contamination has occurred and disposal is required. This includes protective clothing for single use and for limited-use according to the information supplied by the manufacturer.|
|Limited-use chemical protective clothing material||Chemical protective clothing material used for the manufacture of limited-use chemical protective clothing.|
|LOI||Acronym for limited oxygen index - a measure of the percentage of oxygen needed in the atmosphere before a material will either ignite or burn. The LOI of NOMEX® and KEVLAR® fibres is approximately 29.|