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HydraSleeve
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HydraSleeve No-Purge Groundwater Sampler
Unlike any other groundwater sampler, the HydraSleeve instantaneously "cores" a whole water sample from a defined vertical and horizontal interval (usually within the well screen). HydraSleeve samples do not blend fluid from different vertical zones or pull water in from outside the well screen, but instead sample via ambient and/or diffusive flow of groundwater through the well screen. The sample is collected without purging and with very little downwell disturbance, providing excellent control of turbidity. This minimizes the time spent on filtration of turbid samples typically collected after purging with a bailer or submersible pump. Samples can be collected at in-situ pressure with almost no aeration or degassing. This prevents alteration due to loss of volatiles or oxidation of sensitive parameters. Samples can be analyzed for all parameters.
Product Description
HydraSleeve samplers are inexpensive, disposable, and very quick and easy to use, resulting in significant savings on startup and ongoing costs when compared to other sampling equipment such as bailers or pumps.
Applications
HydraSleeve is the best available technology for sampling low yield wells. It is suitable for both short and long term groundwater monitoring, and is especially useful in narrow, constricted, or damaged wells. It can also be used to sample discrete intervals from surface water bodies and tanks.
Cost savings of HydraSleeve sampling (typically 50 to 75%) make it an extremely effective option for monitoring UST leaks, dry cleaning plants, and other small-scale point-source contaminant sites. Samples collected with the HydraSleeve correlate well to other sampling methods, and it can even be used for special challenges such as in-well vertical profiling of multilayered contaminant concentrations.
USING THE HYDRASLEEVE
1 Sampler Placement-The reusable weight is attached and the HydraSleeve is lowered and placed at the desired position in the well screen. In-situ water pressure keeps the sleeve collapsed and check valve closed, preventing water from entering the sampler. Well is allowed to return to equilibrium.
2 Sample Collection-The check valve opens to allow filling when the sampler is moved upward faster than 1 foot per second, either in one continuous upward pull or by cycling the sampler up and down to sample a shorter interval. There is no change in water level, and minimal agitation during collection.
3 Sample Retrieval-When the flexible sleeve is full, the check valve closes and the sampler can be recovered without entry of extraneous overlying fluids. Samples are removed by puncturing the sleeve with the pointed discharge tube and draining the contents into sample containers or field filtration equipment.
Beats bailers for sampling accuracy, turbidity & cost
- Short and long term monitoring
- Low-yield wells
- UST applications
- Discrete interval sampling and vertical profiling
HydraSleeve No-Purge Sampling...Simple by Design
HYDRASLEEVE SPECIFICATIONS 1 1/2 inch
General Specifications
Well Size Compatibility 2" & larger
Sample Sleeve Layflat Width 2.5"
Check Valve/Top Assembly OD 1.75"
Volume/Linear Foot of Sample Sleeve 400 ml
Total Volume of 30" HydraSleeve 1000ml
Sampler Tensile Strength 25-35 lb
Standard Sample Sleeve Material 4 mil PE
Volume Displaced (before Sample Collection)
4", 7 oz. SS Flat Weight 25 ml
30" Empty Sleeve (approx.) 70 ml
Total, 7 oz. Weight & 30” Empty Sleeve (approx.) 95 ml
(Optional) 16 oz. SS Top Weight 65 ml
Sample Collection (for 30" sampler)
*Single Pull Distance to fill (at 1-2 fps) 60-75"
*If cycled up and down to fill, total upward distance must be 2 to 2.5 times length of sampler.
U.S. Patents No. 6,481,300; No. 6,837,120; others pending