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With over 80 years of experience in the material processing business, Prater-Sterling has the knowledge and expertise to get the job done right, on time, every time! Prater's sales and engineering groups work closely with customers to find the perfect solution for their processing requirements. This valuable experience in toll grinding, toll milling, compaction, and separation of dry bulk solids, has allowed them to expand their expertise in process engineering for custom toll processing. Prater-Sterling's extensive test database often allows Prater to provide preliminary pricing and delivery schedules within one or two days of receipt of product.
TOLL PROCESSING
Our toll processing services have even helped customers test–market a new product prior to investing in new processing equipment. We maintain full size production equipment in our Toll Lab so that large quantities for market testing, emergency production, or product development can be processed for our customers. Incoming and finished particles are tested for moisture and size distribution on the latest computerized analyzing devices available. Various types of dry industrial and food grade materials can be completely processed and packaged in sizes ranging from 6 inches down to 2 micron.
TOLL MANUFACTURING
Prater-Sterling's extensive portfolio of toll manufacturing capabilities encapsulates processing of industrial and food grade material by particle size reduction (ranging from 6 inches down to 2 micron), sifting/scalping, briquetting/compacting, mixing, reprocessing and packaging of customers' materials. Prater has taken another large step by adding a food-grade facility that is FDA inspected, Kosher approved, has an AIB superior rating, full HACCP and quality systems.
TESTING CAPABILITIES
If testing is necessary, our state-of-the-art testing facility allows for quick turn-around providing you with the necessary information. Our Analytical Laboratory provides accurate characterization of the feed and finished materials using current sieving and laser technologies. Using computerized, laser-beam particle size analyzers, along with other standard testing devices, we provide a thorough evaluation of raw material that later becomes your finished product. The actual, physical process in particle reduction, sizing, separation, compaction, briquetting, granulation, feeding, and metering is faithfully reproduced. This data dictates the exact operating characteristics needed to precisely match your requirements.
At Prater-Sterling, our capability is much greater than just supplying equipment. We take pride in solving processing problems with customized solutions within a wide-range of applications in various industries across the globe. For over 80 years, we have provided both large and small companies with the most cost-effective process solutions to meet their specific application needs.
Contact Prater-Sterling to make arrangements for your next test or toll project, then ship your materials via, rail, bulk cars, totes, super sacks, drums, bags or boxes to the appropriate tolling facility.

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