The analytical chemical authority control of pesticide and biocide products on the Danish market that was carried out in 2017 by the Danish Environmental Pro-tection Agency (Danish EPA), Chemical Inspection Service, is described in this report. Samples of select-ed types of pesticides and biocides were collected on the Danish market and analysed to verify whether or not the content of the active substances in the prod-ucts in question complies with the product specifica-tion and the labelled content. A total of 38 different pes-ticides and biocides products were analysed. The con-tent of active substance in 5 of the analysed products (2 pesticides and 3 biocides) was not within the ac-cepted tolerance that is determined in the Danish Statutory Order on pesticides and biocides.