Objavljen
The determination is carried out in the following way: Titration of an ethanolic or propanolic solution of the product with a standard volumetric potassium hydroxide or hydrochloric acid or sulphuric acid solution whichever is appropriate, in the presence of phenolphthalein as indicator.
OBJAVLJEN
ISO 4314:1977
90.93
Odluka o potvrđivanju standarda
30. 8. 2022.
Površinski aktivne materije - Određivanje sadržaja slobodnih alkalija ili slobodnih kiselina - Volumetrijska metoda (identičan sa ISO 4314:1977)
90.93 Odluka o potvrđivanju standarda