A few weeks ago, I posted about the Joys of Low Flow Groundwater Sampling (or not). Instead, I reviewed an alternative to this procedure — the Hydrasleeve. I also came across another option for those of you out there that get as much enjoyment from low flow sampling as you do paper cuts, thistles, and flaming dog poo: The Snap Sampler.

How does it work?
Once the Snap Sampler is submerged under the water, the environmental field technician can trigger the device to seal — it is sealed with no headspace vapor. The real beauty of this method is that the sample never comes into contact with air from the well or the outside environment until it?s opened for analysis preparation at the laboratory. That in itself is pretty cool when you compare it to other methods like HydraSleeves, Passive Diffusion Bags, bailers, and low flow sampling. Snap Sampler bottles come in various sizes, including 40 mL, 125 mL, and 350 mL. All bottles have capabilities to seal in situ but can be opened and transferred as necessary. Important to keep in mind, however, is that the larger 350 mL bottle can only be used in 4-inch wells, and the smaller bottles will not fit down smaller diameter wells — 2 inches in diameter is the limit.

Why snatch them up?
1. You can sample for any parameter, not just volatiles like some similar technologies.
2. No purge water to deal with — that in itself makes me want to sing LMFAO?s Party Rock Anthem.
3. The sample may be more representative, because heat, wind, rain, surface contamination, and off-gassing are avoided.
4. No pump, no heavy equipment.
5. Potential cost-savings/time-savings.

Why keep that old pump around?
1. Regulatory acceptance appears to be case by case, and that, to put it simply, annoys me.
2. If I have to collect 2 liters worth of sample using a 125 mL bottle, it really doesn?t matter if I can analyze the sample for any method, because I would probably snap myself.
3. This technology cannot be used on those pesky 1-inchers or the multi-chambered wells.
4. Cost, when combined with limited regulatory acceptance, makes me a little wary to stock up. The 2012 pricing sheet lists the snap samplers at $165 each. This price does not include the other components, such as triggers, well docks, and bottles.? Basically, regulators need to hop on board ACROSS THE BOARD.? And then, eventually, low flow sampling will become as archaic as using a bailer.
Want to learn more? View this 3-minute video, or view ProHydro, Inc.?s, website for additional details and case studies.

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