Description
Características
The EQUILIBRATOR passive diffusion sampler (PDS or PDB) is used in groundwater monitoring well sampling to obtain representative samples of discrete ranges of volatile organic compounds (VOCs).
- Saving time in sampling.
- Reliable and economical. Elimination of purge and ease of use result in substantially lower sampling costs.
- Diffusion samplers are operating in places where volatile organic compounds require regular monitoring.
- This technology, so simple and easy, combined with excellent analytical results compared to other methods, have made diffusion sampling widely accepted for use in industry and consulting.
Funcionamiento
The semipermeable compartment of the sampler is filled with deionized or distilled water, then the sampler is placed in the well (at the depth to be sampled).
Due to the concentration gradient, a fluid exchange takes place between the sampler and the groundwater.
The sampler is recovered, and the content is easily emptied into the flasks for timely analysis in the laboratory.
| Equilibrator samplers available | |
| Sample volume | Dimensions |
| Equilibrator (PDB) capac. 500ml. | 44mm ø x 61cm long |
| Equilibrator (PDB) capac. 1L. | Equilibrator (PDB) capac. 1L. |
Aplicaciones
Sampling of volatile compounds in piezometer or tanks.
The BALANCER is also used in surface waters to identify and monitor VOC pollutant discharge areas. The BALANCER can be used to sample discrete and multiple intervals in a well cover. Concentration profiles at multiple intervals can be obtained simultaneously by connecting multiple Equilibrator samplers to a single connection line.
These samplers have been tested for sampling the following products:
- benzene
- bromodichloromethane
- bromoform
- chlorobenzene
- chloroethane
- carbon tetrachloride
- benzene
- bromodichloromethane
- bromoform
- chlorobenzene
- chloroethane
- carbon tetrachloride
- chloroform
- chloromethane
- dibromoethane
- dichloroethane
- ethyl benzene
- naphthalene
