GB/T 19941-2005 Leather and fur-Chemical tests-Determination of formaldehyde content (Text of Document is in English) - Beijing translation compay

1 Scope
2 Normative References
3 Preparation and Standardization of Formaldehyde Stock Solution
3.1 Reagents
3.2 Procedure for the determination of formaldehyde in the stock solution
3.3 Calculation of concentration of the formaldehyde stock-solution
4 Chromatographic HPLC Method
4.1 Principle
4.2 Chemicals
4.3 Apparatus
4.4 Process for the determination of formaldehyde in leather
5 Colourimetric Method
5.1 Principle
5.2 Chemicals
5.3 Apparatus
5.4 Procedure
6 Expression of Results
7 Test Report
Annex A (Informative) Precision