PORT BYRON — For 42 years, David Hast has been Sandstrom's senior quality control laboratory technician. “I went from college to Sanstrom,” the Port Byron native said. A 1975 Riverdale High School ...
The determination of diethylene glycol content, isophthalic acid content, intrinsic viscosity (ASTM D4603), and acid number (AN) in polyethylene terephthalate (PET) is a lengthy and challenging ...
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