Filtration is the physical process used to separate the particulate and aqueous fractions of a water sample. Samples are filtered for several purposes; for example, to remove microorganisms in order to help preserve ambient analyte concentrations, to remove suspended materials that interfere with specified analytical procedures, and to determine chemical speciation and fractionation of trace elements for geochemical studies.
Geotech filters and filter holders are designed and built to the standards employed and recommended by the United States Environmental Protection Agency (U.S. EPA) and the United States Geological Survey (USGS). Their specifications, quality of construction, and performance make them the favorite choice for environmental professionals and government agencies around the world.
Geotech builds filter holders in a variety of materials compatible with different chemicals and metals. Our filter holders are designed for rapid filtration of water samples in the lab or field, and accommodate filter membranes 47mm to 142mm in diameter.