NF G52-205*NF EN ISO 4098:2018 Leather - Chemical tests - Determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter
2018NF G52-205*NF EN ISO 4098:2018 Leather - Chemical tests - Determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter