PSL POLYMER LABORATORY CERTIFICATE OF ANALYSIS - POLYMER REFERENCE Polymer: Polyethylene Terephthalate (PET)
Batch: 28226
Date of testing: 09/09/2019
Testing carried out by: Mariana Burrows, Ph.D.
Method: ASTM D4603
Equipment used: RPV-2 (2) – Auto PET
Test temperature: 30 oC ± 0.01 oC
Viscometer tube: AKV Ubbelohde – Size 1B
Polymer concentration: 0.5 ± 0.0005 g/dL
Dissolution Time/Temperature: 30 minutes at 110 oC
Solvent density: 1.234 g/mL
Equilibrium time: 15 minutes
Dissolution solvent: Phenol/1,1,2,2-Tetrachloroethane 60:40 (w/w)
The mean was obtained from multiple sample preparations. Each determination was made by measuring a preparation of the sample in accordance with the method stated above. RESULT Intrinsic Viscosity (Mean Value Measured from 10 different preparations)
0.798 dL/g
Standard Deviation
0.005 with 9 degrees of freedom
The reference polymer stated in this certificate was measured in accordance with ASTM D4603 (Standard Test Method for Determining Inherent Viscosity of Poly(Ethylene Terephthalate) (PET) by Glass Capillary Viscometer) using PSL Rheotek RPV-2 (2) AutoPET Polymer Viscometer and temperature was monitored by a reference thermometer. Intrinsic viscosity results were automatically calculated by the built-in software using Billmeyer equation. Poulten Selfe and Lee Ltd has many years of experience in dilute solution viscosity. This reference sample gives the customer a direct comparison with results generated on preparations of the same sample by the PSL Polymer Testing Laboratory. Please feel free to share your data with Poulten Selfe and Lee Ltd. We will be pleased to discuss your solution viscosity results.