Leather Testing Methods by Padana

PADANA GARMENTS is one of the few companies in the world with full wet-end development and production capabilities. From preserving hides, to following precise steps in the manufacturing process, we exercise the complete control that ensures our leather is the most acclaimed in the industry.
Leather Testing Methods:
Here are some of the details of Leather Testing Methods;

IUC/IUP-methodsThe official methods of the International Leather Chemists’ Societies for chemical leather analysis are denoted by the letters IUC and that for the physical testing of leather by the letters IUP. Most of them have been adopted as official methods. The letters DIN denote the official leather test methods of the German Standard Committee. Most of them have been drawn up in conformance with the IUC and IUP methods.

Methods of chemical leather analysis:

IUC/1	General remarks and presentation of analytical results
	= factually corresponding with DIN 53300/part 2
IUC/2	Sampling (as in IUP/2)
	= factually corresponding with DIN 53302/part 2
IUC/3	Preparing the test material by disintegration
	= factually corresponding with DIN EN ISO 4044
IUC/4	Determination of substances extractable with dichloromethane
	= factually corresponding with DIN EN ISO 4048
IUC/5	Determination of the water content of leather
	= factually corresponding with DIN 53304
IUC/6	Determination of organic and inorganic substances in leather removable by washing (loss by washing)
	= factually corresponding with DIN 53307
IUC/7	Determination of ash and water-insoluble mineral substances
	= factually corresponding with DIN EN ISO 4047
IUC/8	Determination of chromium content
	= factually corresponding with DIN 53309
IUC/9	Determination of water soluble magnesium salts in leather (epsom salt)
	= factually corresponding with DIN EN ISO 5399
IUC/10	Determination of nitrogen, ammonium and skin substance
	= factually corresponding with DIN 53308
IUC/11	Determination of pH and difference value of aqueous leather extract
	= factually corresponding with DIN EN ISO4045
IUC/13	Determination of zirconium
	= no corresponding DIN test method available
IUC/15	Determination of phosphorus
	= no corresponding DIN test method available
IUC/16	Determination of aluminium
	= no corresponding DIN test method available
IUC/17	Determination of hydroxyproline
	= no corresponding DIN test method available

DIN standards not within the IUC range

DIN 53314 Determination of chromium (VI) compounds in leather
DIN 53315 Determination of formaldehyde in leather

The following methods are in the course of preparation and have not yetbeen adopted as official methods:
a. Determination of iron in leather
b. Determination of free fatty acids in leather
c. Determination of extractable fat (chamois leather)
d. Determination of sulfur in leather
e. Determination of glutaraldehyde in leather
f. Determination of pentachlorophenol (PCP) in leather

Rgards,