Usně - Chemické stanovení obsahu formaldehydu - Část 2: Metoda kolorimetrické analýzy (Norma k přímému použití jako ČSN).

The information about the standard:

Designation standards: ČSN EN ISO 17226-2
Classification mark: 793886
Catalog number: 507437
Publication date standards: 1.7.2019
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN

Annotation of standard text ČSN EN ISO 17226-2 (793886):

This document specifies a method for the determination of free and released formaldehyde in leathers. This method, based on colorimetric analysis, is not intended to be used for a precise quantification of formaldehyde. The formaldehyde content is taken to be the quantity of free-formaldehyde and formaldehyde extracted through hydrolysis contained in a water extract from the leather under standard conditions. This process is not absolutely selective for formaldehyde. Other compounds such as extracted dyes could interfere at 412 nm