EON supplies hundreds of groundwater samplers for purging, sampling, analyzing, and remediating groundwater.
SuperbailersTM
These are the fastest-filling poly bailers. Our innovative design features an extra-large inlet for rapidly sampling water and for measuring product thickness. They are used in 2-inch wells and larger.
Standard Bailers
EON Standard Bailers are used worldwide because they are dependable. Our Standard Bailers start with the traditional bailer shape and tapered inlet nozzle, and include added features and versatility that make them Easier for YOU!!
Specialty Bailers
Micro Bailer, Disposable Clear PVC
Micro Bailers provide sampling capability for the smallest diameter wells and drive rod. EON’s Micro Bailers are made of clear PVC and will fit into ½" diameter drive rod.
Mini Bailer, Disposable HDPE
EON manufactures the disposable polyethylene Mini Bailer for use in monitoring wells or in drive rod that is ¾" diameter or larger to recover groundwater samples from temporary or permanent installations. The Mini Bailer has an extra tight seal. The entire length is smooth to prevent hang-ups in tight spaces. The body diameter leaves a bit of extra space between the bailer and ¾" casing to resist sand. Our Deep-V check valve seals tightly to prevent sample loss.
PVC Bailers
EON stocks a variety of PVC bailers for purging or sampling monitoring wells or drive rods 1.5-inch and larger. PVC is often used when sampling material considerations are less stringent. Because PVC has a higher specific gravity than polyethylene, PVC bailers do not have additional weight added to enhance sinking. Reusable PVC bailers have a thicker wall and are available with or without threaded removable ends for cleaning.
Teflon™ Bailers, Disposable
Teflon Bailers are used to purge and retrieve samples from 1-inch and larger wells having special chemical sampling needs. These bailers are chemical-resistant, have a clear body, are in stock, and are available weighted and non-weighted.
Our disposable Teflon bailers are made with a thin wall to reduce material expense and to eliminate the labor and uncertainty of cleaning and reusing. While disposable Teflon bailers aren’t as rigid as poly bailers, they are clear for viewing contents during sampling.
Diffusion Samplers
Equilibrator™ Passive Diffusion Sampler
The EQUILIBRATOR™ Passive Diffusion Sampler (PDS or PDB) is used in place of purging and low-flow sampling methods in groundwater monitoring wells to obtain representative, discrete interval samples of Volatile Organic Compounds under natural groundwater flow conditions.
Simply fill the sampler with deionized water, install one or more PDBs in the zone(s) of interest and return at the next sample event to collect samples and replace samplers.
The EQUILIBRATOR™ is also used in surface water and in stream bed sediments and embankments to identify and monitor contaminant discharge areas.
Diffusion Sampling in Sediments
Sediment Diffusion Sampler
Sediment Diffusion Samplers are placed at the bottom of lakes, ponds, or streambeds, or in saturated embankments where Volatile Organic Compounds can migrate from groundwater to surface water.
The Equilibrator™ passive diffusion samplers are used for sediment application and can be buried directly in sediments or used with our protective canister screens.
Protective Canister Screen
When passive diffusion samplers are buried in stream beds or embankments they can be exposed to moving debris, sharp objects, soil pressures, or installation stress that may damage the membrane.
EON’s Protective Canister Screens allow the free passage of water into the sampler while protecting the sampler from physical damage. Casings are made of 2-inch diameter slotted PVC with a pointed tip and screw-off top. Diffusion samplers are placed inside the canister and the entire assembly is installed.
Canisters will withstand a moderate amount of pushing during installation and retrieval, and they are reusable.
HydraSleeve ``No Purge`` Sampler
The HydraSleeve is used in place of purging and low-flow sampling methods in groundwater monitoring wells to obtain representative, real time, discrete interval sample of ALL compounds under natural groundwater flow conditions.
The HydraSleeve is effective for sampling slow recharge wells, for monitoring interfaces, and for concentration profiling. Simply lower the empty sampler to the desired interval, let the well return to undisturbed conditions and pull the sampler through the sample zone.
Vapor Diffusion Samplers
Passive Vapor Diffusion Samplers are used in the soil or saturated sediments to collect vapor phase concentrations of Volatile Organic Compounds. Samplers consist of an empty, open 40mL VOA vial enclosed in a semi-permeable polyethylene membrane. The samplers are installed directly in sediments above or beneath the saturated zone. When installed, the membrane screens out water vapor, soil, semi-volatile compounds and metals and allows VOCs to enter the membrane and fill the vial by the passive diffusion process. When retrieved, the vials are capped and sent to a lab for analysis.
PUMPS
Peristaltic Pumps
- The Solinst 12V DC Peristaltic Pump is designed for vacuum pumping or pressure delivery of liquids or gases and is ideal for sample removal from shallow wells and surface water to pumping depths of about 25 feet.
- Our newest Peristaltic Sampling Pump is lightweight, compact, and battery- powered for field sampling of monitoring wells, surface water, waste water, tanks and manholes to pumping depths of about 25 feet.
Electric Submersible Pumps
- The Stainless Steel NOMADTM 12VDC Pumps are perfect for light purging, standard sampling, and low-flow sampling in wells (2-inch diameter and larger) to depths of 50 feet.
- EON features the Proactive™ line of battery-operated DC pumps for applications including light purging, low-flow sampling, and high volume purging.
Grundfos RediFlo2 Pump
The Grundfos RediFlo2 is an electric submersible pump for purging, sampling, and for low-flow sampling of 2-inch and larger wells.
Bladder Pumps
EON offers specially chosen Bladder Pumps that perform exceptionally well for purging, standard sampling, and low-flow sampling.
