Surface active agents — Evaluation of certain effects of laundering — Methods of analysis and test for unsoiled cotton control cloth
NORMA vydána dne 17.8.1989
Označení normy: ISO 4312:1989-ed.2.0
Datum vydání normy: 17.8.1989
Počet stran: 31
Přibližná hmotnost: 93 g (0.21 liber)
Země: Mezinárodní technická norma
Kategorie: Technické normy ISO
Description / Abstract: Methods for the determination of the following characteristics of the test pieces after washing are specified: intrinsic greying, intrinsic yellowing, increase in organic deposit content, increase in incineration residue, overall decrease in breaking strength, decrease in breaking strength resulting from chemical degradation of cellulose due to laundering and from mechanical factors in laundering. Annexes contain the determination of increase (or decrease) in degree of whiteness and of chemical wear and further a grey scale and the measurement of reflection.