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EQUILIBRATORTM Passive Diffusion Sampler
Patents 6,196,074 and 5,804,743 |
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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.
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Removing the Plug
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Attaching the Weight
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Filling a VOA
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Why Use the EquilibratorTM?
- Reduce sampling cost 50%-70% by eliminating field time spent purging and the cost of purge-water disposal.
- No expensive, complicated, or bulky equipment to purchase, maintain, or mobilize.
- Obtain depth-specific concentration profiles.
- Reduce sampling error and improve repeatability.
EquilibratorTM Design Features
- Built-in suspension handle, attaches readily to suspension tether.
- Semi-permeable LDPE membrane holds deionized water and allows transmission of VOCs into sampler.
- Easy emptying methods; puncture with VOC “straw” or remove plug & pour.
- Filling port for field, lab, or factory filling
Required Components
Optional Items
- Stainless steel hanger for use in wells with one sampler (1 per sampler, reusable)
- Snap clips for easy connection of tether to sampler or well cap
- Connection points on tether for multiple samplers
- Tether preparation service
- Well cap with suspension ring
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EON Products,
Inc. · Toll-Free:
(800) 474-2490
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