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    RE: No-purge sampling references

    Posted in: Groundwater Forum

    You should take a look at "Passive Diffusion Bags" and "HydraSleeves". Both of these sampling methods allow you to collect samples which have shown to have comparable analyticals. Just do a web search for either of the above and you'll find the information...

  • photo not available

    RE: No-purge sampling references

    Posted in: Groundwater Forum

    Go to NGWA's website and search passive diffusion bags (PDBs). There are confirmation studies. I disagree that all methods produce bias. The accepted methods in the industry are used because no statistically significant bias (regarding the specified...

  • photo not available

    RE: No-purge sampling references

    Posted in: Groundwater Forum

    Have a look at Sandy Britt's Snap-Sampler web site. Sandy has done a good job of technically justifying the products he promotes. http://www.snapsampler.com/Technical-Information-and-Case-Studies (disclaimer - not an endorsement) Working...

  • photo not available

    RE: No-purge sampling references

    Posted in: Groundwater Forum

    Great to see people interested in this topic. Passive sampling is a great way to make sampling those deep 100m+ wells much easier. Ten meter wells are good for passive sampling too, but the deep ones are especially tough for low flow! The others...

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