Textiles — Determination of resistance to certain insect pests
NORMA vydaná dňa 1.7.1977
Označenie normy: ISO 3998:1977
Dátum vydania normy: 1.7.1977
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: Applicable to all textiles containing animal fibres in any proportion. Information relating to the breeding of the larvae is given in the annex. Conditioned voracity control specimens and test specimens of known mass are placed in contact with selected larvae for 14 days. The loss in mass of all specimens and the condition of the test larvae are ascertained to assess the resistance of each test specimen.