Chromium is very hard and melting point 1900 is an element close to the degree and with this feature is used to provide more hardness to metals. Together with Ni, it has an important field of use as stainless steel. Chromium has + 3 loaded in nature, but + 6 gains value by reduction. This powdered chromium has been used for many years in the tanning process in the leather industry. In this way, long-term durability is given to the leather. Recent research has shown that Cr + 6 ion and its compounds cause cancer.

In both cases, chromium is a harmful element to human health. Chromium damages the human body and weakens the immune system and leads to liver diseases. It also causes mutations in the human body genetically and prepares the environment for cancer formation.

Laboratories are accredited in accordance with the TS EN ISO / IEC 17025 standard from the domestic or foreign accreditation organizations in order to be qualified and reliable in their measurement, test and analysis studies and for the validity of the reports they prepare. These laboratories also carry out chromium (VI) measurements and analyzes in textile products, especially leather products within the scope of their chemical and ecological studies. The standards adopted in these studies are as follows:

• DIN 53314 Skin tests - Determination of CR (VI) content in the skin
• ISO 17075 Skin tests - Chemical tests - Determination of chromium (VI) content
• TS EN ISO 17075 Leather - Chemical tests - Determination of chromium 6
• TS EN ISO 2418 Leather - Chemical, physical, mechanical and fastness tests - Sampling zones
• TS EN ISO 4044 Leathers - Chemical tests - Preparation of chemical test specimens
• TS EN ISO 4684 Leather - Chemical tests - Determination of volatile substances