PRODUCT SHEET FLEXIBLE WATER SAMPLING FOR MARINE BIOLOGISTS Precision screening and monitoring for marine organisms as well as organic and inorganic pollutants Deploying a unique design which pumps water through filters to determine mass flow, -4H-Active water samplers are the perfect platform to optimize diverse research streams by enabling the ability to collect samples from larger areas for longer periods of time. Further, -4H-Passive samplers have a choice of foils for i.e., sampling metals, sediment or hormones, ensuring that marine biologists can do more with less equipment, including screen for microplastics qualitatively. OPERATING PRINCIPLE The -4H-JENA Active Sampler is a specially designed flow-through tube array that includes a set of sieves or nets with different mesh sizes. Both system principles can be combined in one array for simultaneous active and passive sampling. The -4H- JENA Passive Sampler is a flow-through tube array, which can be equipped with different receiving membranes (e.g., diffusive gradients in thin films, low-density polyethylene or silicone rubber strips). Sampler tubes can be cascaded from one to as many as required. They are flushed with sea water through a separate water system or the outlet of the -4H FerryBox water system. -4H-JENA Active and Passive Samplers are controlled by the dedicated -4H-FerryBox PC, but a stand-alone PC can be provided if this is not available. CUSTOM PROJECTS We support customers to configure Active and Passive Samplers to their exact requirements with the number of tube units, volume, physical size, connectors, and material all selected to deliver the highest performance for the specific application. Further variables include: ● ● Number of sieves installed Mesh size of sieves for cascaded sampling Mesh size for plankton nets

PRODUCT SHEET -4H-Active & Passive Samplers APPLICATIONS -4H-Active and Passive samplers are a comprehensive toolset for marine biologists to test important water quality parameters. Active sampling: ● creening for Phytoplankton S ● creening for Zooplankton S ● ractionated sampling of suspended matter F Active sampling insets such as cylindrical nets and cascaded sieves with different mesh sizes M onitoring organic water pollutants M onitoring inorganic water pollutants Different passive sampling holders for silicone rubber strips, low density polyethylene and diffusive gradients in thin films...