German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 45: Interlaboratory comparisons for proficiency testing of laboratories (A 45)— 31 стр.
German standard methods for the examination of water, waste water and sludge - General informations (group A) - Part 42: Interlaboratory trials for method validation, evaluation (A 42)— 30 стр.
German standard methods for the examination of water, waste water and sludge; general information (group A); inter-laboratory tests; planning and organization (A 41)— 12 стр.
German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 45: Interlaboratory comparisons for proficiency testing of laboratories (A 45)— 36 стр.
German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 45: Interlaboratory comparisons for proficiency testing of laboratories (A 45)
German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 45: Interlaboratory comparisons for proficiency testing of laboratories (A 45)— 36 стр.
Soil quality - Determination of effective cation exchange capacity (CEC) and exchangeable cations using a hexamminecobalttrichloride solution (ISO 23470:2018); German version EN ISO 23470:2018— 33 стр.
