NO-PURGE GROUNDWATER SAMPLER
The new HydraSleeve™ "No-Purge" groundwater sampler can cut field sampling costs by 50 to 80%!
HydraSleeve™ makes groundwater sampling a simple, three-step operation that is more effective than bailers, passive diffusion bags, portable or dedicated pumps. The low-cost, disposable HydraSleeve captures a "core" of water from any discrete interval in the screened portion of the well with no change in water level and minimal disturbance to the water column. HydraSleeve is sealed except during sample collection, then re-seals itself, assuring that a formation quality sample is recovered. The low-profile HydraSleeve can be fabricated in various sizes to match well and sampling requirements.
HydraSleeve Benefits
EFFECTIVE
- Sample for ALL compounds
- Best sampler for slow recharge wells
- Conservative results comparable to conventional methods
- Repeatable sampling method
- Lower turbidity than purge and sample
- Slim cross section minimizes disturbance
INEXPENSIVE
- Reduces field sampling costs by 50 - 80%
- No purge water disposal
- No expensive equipment
FAST
- Collects samples in less than 15 minutes
- Cuts total field time by half or more
- No decontamination between wells
EASY TO USE
- No training or special tools required
- Small, convenient and simple shipping
MANY APPLICATIONS
- Long or short term groundwater monitoring
- Samples low-yield wells
- Determines dissolved contaminant fraction
- Samples crooked or constricted wells
- Vertically defines contaminant concentrations or
composites sampler from 10' screen interval
HOW IT WORKS
| Placing Sampler HydraSleeve is lowered into place and positioned in the well screen. Water pressure keeps bag collapsed and check valve closed, preventing water from entering sampler. Well is allowed to return to equilibrium. |
Sample Collection HydraSleeve fills when the check valve is moved upward faster than 1 fps. It fills by continuous upward movement. When moving upward, the check valve opens and fluid flows into the bag. There is no change in well water level and minimum sample agitation during collection. |
Sample Retrieval Flexible bag is full and check valve closed. Sampler is recovered without entry of extraneous, over-lying fluids. Note: Several HydraSleeves may be stacked on the suspension cable for vertical profiling. |
METHODS OF SAMPLING WITH THE HYDRASLEEVE
HydraSleeve and No-Purge Sampling • Passive Ground Water Sampling
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