Peristaltic vs Vacuum Portable Samplers
Vacuum versus Peristaltic Portable Samplers for Water, Wastewater, Stormwater and Runoff. ISCO 6712 vs Campbell Scientific vs Hach Sigma SD900. What are the differences between vacuum based samplers and peristaltic samplers? What are the advanteges of vaccum samplers? What are the advanteges of peristaltic samplers?

Peristaltic vs Vacuum Portable Samplers

We are often asked about the differences between peristaltic samplers and vacuum samplers for water, wastewater, stormwater and environmental monitoring. The table below explains the key differences in Peristaltic vs Vacuum Portable Samplers Learn more about our water samplers. *Source: published datasheets, manuals, specifications and public web information as of 11/8/13

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Wastewater Effluent Sampling – Campbell Scientific Sampler BVS4300C

Reliable Wastewater Effluent Sampling Wastewater effluent sampling can be challenging for treatment plant operations. Every wastewater sample is valuable.  Missed samples and failures can lead to loss of data in reports, overtime for grabbing additional samples and even compliance issues.  Vacuum pump water sampling technology offers a significant improvement over peristaltic pump technology for water sampling. The Problem with Peristaltic Samplers Peristaltic type outdoor water samplers have traditionally had peristaltic pump tubing failure or peristaltic pump roller failures.  The second most frequent issue encountered with outdoor samplers are refrigerator failures. This particular municipal wastewater plant in Ohio had experienced multiple water sampler failures in the past and was looking for something simple and more reliable. The Solution with Vacuum Based Wastewater Effluent Samplers These BVS 4300C water samplers from MCE Process and Campbell Scientific replaced the failed ISCO Automatic Water Sampler units at a wastewater plant in Ohio. This water reclamation facility really wanted a more reliable sampler for wastewater influent and wastewater effluent. The Campbell Scientific BVS4300C Stationary Automatic Water Sampler was the wastewater sampler of choice.  The reliability of vacuum wastewater samplers along with the reduced maintenance was the real determining factor.The BVS4300C provided the stationary automatic wastewater sampler needed in a outdoor heavy duty package. Why Go With Vacuum technology to replace the Peristaltic ISCO sampler? Vacuum Samplers have clear technology benefits over peristaltic pump samplers Higher Accuracy and Consistent Sample Volumes Rapid Transport velocities = more-representative samples Less disturbance of sample No roller contact with tubing = less-frequent maintenance Cross contamination of the samples are greatly reduced by a positive pre and post purge   Get started with wastewater effluent samplers Discover More Vacuum Sampler Advantages Learn more about wastewater sampling at http://mceprocess.com/samplers/

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Samplers – Wastewater Samplers, Stormwater Samplers, Water Samplers

Portable and Stationary Water and Wastewater Samplers MCE Process offers both Portable Automatic Samplers and Stationary Automatic Samplers for water, wastewater, storm water or other water-quality and research applications. Our automatic wastewater samplers come in both composite (one sample container) or discrete (multiple containers) configurations or even a custom combination of composite and discrete. These durable wastewater samplers use proven industrial grade vacuum pumps to draw water through 3/8" or 5/8" intake tubing. This is in contrast to traditional peristaltic pumps that induce flow by squeezing flexible tubing. Automatic water samplers can be fully customized with water quality sensors, flowmeters, dataloggers and more. Vacuum Wastewater Sampler and Vacuum Water Sampler Advantages Faster sampling rates - Up to 7 ft/sec for high transport velocity. Better Repeatability - within +/- 2cc's (+/- 2%) Higher Vertical lifts - up to 28 Feet, at speeds above the EPA minimum of 2.5 ft/sec. (3ft/sec for lifts above 20 ft) Longer Sampling Distances - capable of draws over 250 feet away! Less Maintenance - no rollers or peristaltic pump tubing to replace and no moving parts touch the liquid. Higher Volume Sampling for High Solids - 5/8" ID intake diameter increases volume by 66% which helps prevent blocking and improves accuracy. Air Purge - Positively clears sample line before and after each sample. The vacuum method of sampling also disturbs the wastewater samples less and better represents the original wastewater solution, especially if there is high concentrations of suspended solids. Peristaltic samplers use a "squeezing" process to bring each wastewater sample into a chamber. This peristaltic sampler process is typically less reliable, weaker in strength, and breaks down more quickly over time. However, if regular maintenance is not a factor and you only have a short draw distance, a lower cost peristaltic sampler may be in your best interest. Start Your Sampling Water and Wastewater Your Way The automatic wastewater samplers offered by MCE Process and Campbell Scientific include a versatile and rugged controller that accepts wide range of inputs to start the sampling: Pulse input (e.g., rain gauge, flow meters) 4 to…

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