Snap Sampler water sampler

The Snap Sampler–a passive marine, waste water or groundwater sampling system that saves money and improves data quality.

The Snap Sampler is ideal for meeting Standard Operating Procedures (SOPs) for marine and groundwater sampling for scientific experimentation and environmental monitoring. Liquid samples can be measured in the lab for chemical constituents with the optical spectrometer Spectral Analysis System.

Why is passive, “no-purge” sampling with the Snap Sampler such a “Snap!”

Passive sampling relies on natural flow-through in the well and “passive” re-equilibration between the well and aquifer before collecting samples. No water is pumped from the well, so you don’t need pumping equipment or heavy waste containers. Sampling takes ~15 minutes per well and you have virtually no logistics for equipment–you really don’t even need a truck. That’s why sampling with the Snap is a Snap.

The Snap Sampler takes “passive” a step further by sealing the sample in situ–eliminating the pour step at the well head. As a result, Snap Samples are truer to the condition of the sample while it is still in the well. You don’t add artifacts from pouring under variable weather conditions, seasons, or the technique of the field sampler.

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specifications

  • PageLines-SnapSampler.jpgThe 40 ml VOA vial can be used directly in standard laboratory autosampler equipment. The sample is never exposed to the open air from the well to the gas chromatograph.
  • The 125ml or 350ml POLY bottle also seals in situ. The plastic bottle can be used for larger volume sample needs, metals or other analytes where a plastic bottle is preferred. For non-volatiles, this bottle can be opened at the well head to combine in a larger bottle, transfer to a glass bottle (e.g. for SVOCs), or just to remove the internal spring before acidifying a metal sample.

Snap Samplers with 40ml and 125ml bottles fit in 2-inch or larger monitoring wells. Snap Samplers with 350ml bottles fit in 4-inch or larger monitoring wells.

cost savings

Sample in a fraction of the time and with a fraction of the equipment needed for purge sampling—save up to 50% or more over traditional or low volume purging.

Dedicated equipment cost can be recouped in as few as 2 or 3 monitoring events, not years later as with other dedicated systems.

No pump, pump controller, or other equipment rentals required.

No generators, drums, or heavy equipment to slow the sampling process.

 

data quality improvements

Fixed sampling depth and sampler equilibration means that you are sampling in the same consistent way, in the same location, quarter to quarter, year to year.

Consistency means reduced variability. Reduced variability means seeing results of remedial action or natural attenuation sooner. Seeing results sooner satisfies regulators and saves money.

 

how the snap sampler works:

Snap Sampler Glass BottleSnap Sampling is a Passive, equilibrated, grab sampling method—Snap Samplers are deployed in advance and allowed to equilibrate with the well/aquifer system.

To sample, you simply trigger the Snap Sample bottles to close in situ. Then, retrieve the sealed sample bottles and send to the lab.

To prepare for the next sampling event, you set new bottles in the Snap Samplers and reinsert the samplers back in the well—it’s that simple!…and your samples are never exposed from the well to the lab.

The Snap Sampler is a patented (US Pat. 7,178,415) groundwater sampling device that employs a unique double-end-opening bottle. Bottles are available in 40ml VOA vial size in glass; or 125ml and 350ml sizes in plastic.

 

how to operate

  • To operate, Snap Samplers are loaded with bottles, “Snap” caps are set into an open position, then the Samplers are deployed downhole with an attachment/trigger line.
  • The Snap Sampler bottles seal under the water surface by simply pulling the trigger, pushing the electric trigger button, or pressuring up the pneumatic trigger system. The trigger releases PFA Teflon “Snap Caps” that seal the double-ended bottles downhole.
  • Snap Sampler Plastic BottleThe end caps are designed to seal the water sample within the bottles with no headspace vapor. Once the closed vial is retrieved from the well, you prepare the bottle with standard septa screw caps and a label.
  • The 40 ml VOA vial can be used directly in standard laboratory autosampler equipment. The sample is never exposed to the open air from the well to the gas chromatograph.
  • The 125ml or 350ml POLY bottle also seals in situ. The plastic bottle can be used for larger volume sample needs, metals or other analytes where a plastic bottle is preferred. For non-volatiles, this bottle can be opened at the well head to combine in a larger bottle, transfer to a glass bottle (e.g. for SVOCs), or just to remove the internal spring before acidifying a metal sample.

 

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