DIN 53345-6
DIN 53345-6
Testing of fat liquors and greases for leather; methods of analysis, determination of pH-value in hydrate emulsion or solutionstandard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/1978
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/1978