Chemcatcher<sup>®</sup> has many configurations, which collectively can passively sample [[Inorganic compound|inorganic]] pollutants (metals) and a wide range of [[Organic compound|organic]] pollutants. It is composed of a single-use disc, with or without a [[Membrane|membrane]], sealed into a plastic support. Types of receiving phases and membranes vary greatly, depending on the target chemicals to be sampled. Time-averaged water concentrations of many chemical pollutants can be determined from Chemcatcher<sup>®</sup> sampling as long as its sampling rate and the water flow rate are known.<ref name = Chem1></ref><ref name = Chem2></ref>
