Division II.5 Sampling, sample handling

Clean collection gauges and containers shall be used for the collection of samples. Deionized water shall be used to rinse the equipment. It is important that the containers are kept away from light and kept cool during the sampling and transport. In sunny and warm conditions preservatives may be added to prevent the growth of algae. In this case only such preservatives should be used that do not interfere with the analysis of any ion of interest.