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Sampling & Monitoring

Simple by design: Discrete Interval, No Purge Groundwater Sampler

The HydraSleeve is fast becoming one of the most popular methods of groundwater sampling on many Australian sites. This is because it enables a very good representative sample of all analytes and it is low cost.

The HydraSleeve makes groundwater sampling a simple, three-step operation that can be more effective than purging or low-flow sampling. 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.

The HydraSleeve is sealed except during sample collection, then re-seals itself, assuring that a formation quality sample is recovered. Download the HydraSleeve Standard Operating Procedures.

A new HDPE version is also available for sampling PFC's.

Hydrasleeves Vs Low-Flow Sampling:
WSP / Parsons Brinckerhoff have recently completed a study comparing results from low-flow groundwater sampling to those obtained from using Hydrasleeves. In summary the results were found to have an excellent correlation.
The study was recently presented at CleanUp 2015 in Melbourne by Claire Howell.
Download Presentation

There have also been numerous white papers wriiten in the US on this topic. If you would like to receive copies of some of these papers please email us.


The HydraSleeve™ is used in place of purging and low-flow sampling methods in groundwater monitoring wells to obtain a representative, real time, discrete interval sample of ALL compounds under natural groundwater flow conditions. The HydraSleeve is effective for sampling low or high 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. The HydraSleeve seals itself when full, preventing overlying layers from entering and sampled contents from leaving the sampler.

A new HDPE version is also available for sampling PFC's.