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)
Edition 2024-09

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)
Edition 2023-12

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)
Edition 2014-06

German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 51: Calibration of analytical methods - Linear calibration (A 51)
Edition 2017-05

German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 60: Analytical quality assurance for chemical and physicochemical water analysis (A 60)
Edition 2013-12

German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 62: Plausibility check of analytical data by performing an ion balance (A 62)
Edition 2014-12

German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 71: Equivalence of two analysis methods based on the comparison of analysis results (A 71)
Edition 2020-10

German standard methods for the examination of water, waste water and sludge - Physical and physical-chemical parameters (group C) - Part 3: Determination of absorption in the range of the ultraviolet radiation, Spectral absorptions coefficient (C 3)
Edition 2005-07

German Standard Methods for Analysing of Water, Waste Water and Sludge; Physical and Physical-chemical Parameters (Group C); Determination of Temperature (C4)
Edition 1976-12

German standard methods for the examination of water, waste water and sludge; physical and physico-chemical parameters (group C); determination of the oxidation reduction (redox) potential (C 6)
Edition 1984-05