Solinst 425 Discrete Interval Sampler

Solinst's 425 Discrete Interval Sampler gives environmental professionals an excellent, accurate tool for obtaining water samples below a layer of floating product, or for sampling LNAPL and DNAPL contaminants themselves. Because the sample is not pumped through tubing, it offers a more representative picture of water quality at specific depths. Samples are collected without being disturbed or mixing with water collected at different levels.

The Solinst 425 can also be used for profiling open bodies of water, boreholes and screened wells, collecting water samples at different depths or points of inflow, and VOC sampling.

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Quality Components for Accurate Sampling

• The Solinst Discrete Interval Sampler consists of a stainless steel sampler with Viton® o-rings and Teflon® and polypropylene check balls to prevent leakage and ensure sample integrity.
• LDPE, Teflon® or Teflon®-lined polyethylene tubing can be used; imperial or metric markings are available for accurate depth readings.
• An easy-to-operate Solinst reel is attached to a hand pump which is used to supply pressure to the sampler.
• Samplers are available in capacities ranging from 6 oz. (1" by 2') to 61 oz. (2" by 4').

Easy Operation in Field Conditions

With the Solinst 425 Interval Sampler, collecting quality samples is easy. Simply follow these four steps:

• Pressurize the sampler using the hand pump before lowering it into the well, borehole or open water source.
• Activate the pressure release valve once depth level is reached. This will cause the sample to fill with water from the desired sampling area. A checkball prevents the sample from entering the tubing, keeping the sample safe and eliminating the need for time-consuming decontamination procedures.
• Re-pressurize the sample and steadily raise it to the surface. Once there, use the sample release device to slowly decant the sample.
• Disassemble the sampler for decontamination before re-deploying it.

VOC Sampling

The Solinst 425 Interval Sampler can also serve as a powerful instrument for sampling VOCs. Sample integrity is preserved as volatile organics have little contact with air, do not travel through tubing and do not mix with water at other levels of the well. For even more sampling integrity, Solinst also offers the 425-T, which operates similar to the 425 but features a special shut-off valve which prevents all contact with air during the sample collection process — simply disconnect the unit, and send it for testing as-is.

Contact Environmental Equipment & Supply for Pricing and Availability

Environmental Equipment & Supply is an authorized Solinst dealer serving customers throughout the United States. We sell and provide repairs and warranty service to both the 425 Discrete Interval Sampler and the 425-T for collecting volatile organic compounds.

With over 25 years of experience, we understand the requirements of today's environmental professionals and work hard to provide the highest level of service possible to our customers. Contact us from 7am to 6pm, Monday to Friday, for more information.