Rigid Porous Polyethylene (RPP) Samplers
How RPP Samplers Work
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.
The RPPs are deployed with the white plug end down (the red cap is up) and are kept in this position until the contents are placed into sample bottles for transport to the laboratory. This is to avoid leakage from the pores of the sampler.
RPPs were invented by Don Vroblesky, Ph.D., of the United States Geological Survey (USGS).
The RPPs are approximately 6" long with an outside diameter of 1.5". It holds approximately 100 mL.
|Rigid Porous Polyethylene Samplers (RPP)||PRICE, each|
|rpp sampler (6" length, 1.5" diameter, 100 ml)||$65.00|
Click here to order!
ALS Environmental is a licensed manufacturer of passive diffusion samplers. We actively participate in the Interstate Technology Regulatory Council (ITRC) and have been instrumental in technological and regulatory advancements in this field.
ALS Environmental also provides air quality sampling equipment and media for lease or purchase. More information can be found in our air quality testing and consulting service section.