The Decontamination Model
For Plastics Recycling

A proprietary computational tool for systematically analyzing and reporting levels of contaminants during each stage of a plastics recycling process

Introduced in 2002, the CONTAINER SCIENCE® Decontamination Model is a computer model for predicting the decontamination efficacy of processes at plastics recycling facilities. The Decontamination Model is a proprietary computational tool developed and offered as part of our client consulting services.

More accurate and economically superior to physical testing

The Decontamination Model provides a unique approach to determining the suitability of recycled plastic in food contact applications. While other approaches employ costly, time-consuming and potentially flawed physical surrogate testing, the Decontamination Model is based upon actual measured diffusion and partition coefficient data for the permeants at SSP temperatures. It also takes into account pellet/flake geometry and dimensions, process temperatures and polymer crystallinity. Results are accurate and reproducible, eliminating inconsistencies inherent in physical testing. The Decontamination Model has been validated through extensive comparison to data generated from real-life scenarios since its introduction in 2002, and has been verified by the FDA.

Analyze your processes and conditions

The Decontamination Model is a powerful tool for evaluating the decontamination effectiveness of current recycling equipment and assessing the viability of alternative equipment or process conditions. Our service is designed to help recyclers, brand owners and equipment manufacturers to critically evaluate and improve their recycling and decontamination processes to find the most effective and economic way to run machinery.

Gain understanding of contaminant levels

The Decontamination Model includes analysis of acetaldehyde, toluene, limonene, H2O, CO2, ethyl butyrate, O2, chloroform, citral, linalool, ethylene glycol, tetracosane, lindane, benzophenone, and benzaldehyde; other permeants can be added on request. A typical results package will evaluate toluene, chloroform, lindane and benzophenone to fulfill the FDA’s testing guidelines for volatile polar, volatile non-polar, non-volatile polar and non-volatile non-polar surrogates. The Model uses the beginning and final levels of each contaminant as specified by the FDA. Polymers in the Model include PET, polyethylene, and polypropylene.

With our Decontamination Model, clients can quickly identify processes needing improvement without the long wait times of physical testing.

The CONTAINER SCIENCE® Decontamination Modeling service is available on either a one-time basis or retainer basis. When you use our service, we will work with you to ensure your processes meet your requirements. With each decontamination calculation you submit, you will receive: 1) a comprehensive, easy-to-read summary report showing the final contaminant results after each step of your process; 2) the raw data in spreadsheet format, showing the concentration of each contaminant vs. time for each process step; 3) graphs of the contaminant levels over the course of each step.

Inquire for Decontamination Modeling service

Contact us

For general information about the CONTAINER SCIENCE® Decontamination Model, consulting services, CONTAINER SCIENCE® research and development services, or the M-RULE® models, please call us at 770-992-5358, or e-mail us at