Rigid Porous Polyethylene RPP

Meaning, Term, and Glossary Definition - What is Rigid Porous Polyethylene RPP?

Rigid Porous Polyethylene samplers, or RPPs, are made of thin sheets of foam-like porous polyethylene with pore sizes of 6-20 microns. When completely filled with water, the pores allow a water-water interface, facilitating the equilibrium of water-soluble analytes in the aquifer adjacent to the well screen with the deionized water of the RPP. Like the majority of passive samplers, it is recommended that they remain deployed for a minimum of 14 days, though the analytes of interest may equilibrate sooner.



RPPs were invented by Don Vroblesky, Ph.D., of the United States Geological Survey (USGS).

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Related glossary terms:

High-Density Polyethylene   Low Density Polyethylene LDPE   Polyethylene Diffusion Bags PDB   
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Analytical testing dots