Leather - Chemical tests - Determination of water-soluble matter, water soluble inorganic matter and water-soluble organic matter (ISO 4098:2006); German version EN ISO 4098:2006— 12 стр.
Leather - Chemical tests - Determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter (ISO 4098:2018); German version EN ISO 4098:2018— 11 стр.