A new compact, stand-alone testing instrument is said to determine the intrinsic viscosity (IV) of PET resins while avoiding both the costs and the environmental hazards of handling and disposing of toxic solvents. The new Davenport PETPlus system from Lloyd Instruments, a unit of Ametek Inc., Largo, Fla., comes with an integral nitrogen-regulation valve for easy pressure adjustment when testing different materials. PETPlus uses a well-established solvent-free method for routine IV measurement of PET. Molten PET is extruded through a calibrated die by nitrogen gas under pressure, and the LVDT probe movement against time is recorded and displayed. The system measures the optimum flow rate and calculates intrinsic viscosity. Tests can be completed in as little as 20 min. The system stores up to 600 test results. (727) 536-7831 • www.lloyd-instruments.com
Ametek Measurement &
8600 Somerset Dr. Largo, FL 33773
Phone (727) 536-7831 Fax (727) 539-6882
Editor PickThe Need for Generalists: Part 4
Solving problems generally requires distinguishing good samples from bad ones. But that can become clumsy when one person runs the test while another analyzes the data.