Processing Requirements Efforts should be made to sort and market paper at the highest value practical. However, consideration must be taken of the volume of paper generated, for example, in many offices it is more practical to collect mixed office paper together than to spend the time and energy to properly sort for only high-grade paper. Where there is a very large volume of material, white ledger paper and computer paper can be collected and marketed separately. Contaminants Consult your paper markets for limitations on types and quantities of contaminants. Because of differences in mill production processes or machinery, what is considered a contaminant by one mill may not be of concern to another.
Contaminants can render a mill s product unsalable and can destroy expensive machinery.
Because of these concerns, mills demand that suppliers meet specified requirements. If specifications are not met, mills will reject loads. If the paper you are trying to market has continuing problems with contaminates, you will have trouble finding a mill to do business with you. Plastics Column Headings PET Polyethylene terephthalate. Soft drink bottles and other blow molded containers.