Water samples from the Zackenberg River is collected near the Hydrometric station at 08:00 and 20:00 o'clock every day in the period 1997-2011 and three times a week from 2012-present. The water samples are filtered onto a Whatman GF/F filter (0.7 um) and dried at 105 degrees Celcius. After the end of the season the filters are brought to the Department of Geosciences and Natural Resource Management and analyzed for organic matter, using loss on ignition.
