Plastic Materials Testing
PTI offers over fourteen different tests for plastic material testing. If you would like to submit samples for testing please download and complete our Analytical Testing Sample Submission Form. If you have any questions, please contact us and we can help.
AA Generation, Resin
This procedure determines the AA generated by a resin as a function of time at a given temperature.
- Carboxyl End Group Analysis for PET
Carboxyl End Group Analysis for PET
This procedure determines the carboxyl end group content in a PET sample.
- Coefficient of Friction Testing
Coefficient of Friction Testing
This procedure determines the coefficient of friction between two PET film samples using an adapted version of ASTM D1894-90.
This procedure is used to determine the amount of haze and the degree of color exhibited by a preform or container sidewall. This is an indication of how effectively the material was processed and/or the material’s ability to be processed.
This procedure is used to determine the amount of haze and the degree of color exhibited by the resin or flake. This is an indication of how effectively the material was processed and/or the material’s ability to be processed.
This procedure determines a sample density and correlates that density to crystallinity using theoretical PET amorphous and crystalline densities according to ASTM D1505.
Dart Impact – Bruceton Staircase Method
This procedure determines the weight, height and energy where a sample fails when it is impacted with a free-falling weight using the Bruceton Staircase Method.
Dart Impact – ASTM D3029-F
This procedure determines the weight, height, and energy at which a sample fails when it is impacted with a free-failing weight according to ASTM D3029-F.
- Melt Flow Curves
Melt Flow Curves
This test measures the melt flow curve of a PET sample at 3 temperatures and 8 shear rates.
- Melt Index
This procedure determines the rate of extrusion of molten resin or ground samples through a die of specified length and diameter under prescribed temperature, load, and piston position as a function of time according to ASTM D1238.
- Moisture Analysis
This procedure measures the amount of moisture within a sample using the coulometeric Karl Fischer technique.
- Sieve Analysis Particle Size
Sieve Analysis Particle Size Distribution
This procedure is used to determine the particle size distribution of plastic material as received from the source. It may be used on samples of incoming resin or flake used in recycling operations.
- Percent Ash
This procedure determines the percentage of ash in a submitted sample.
- Stress Crack
This procedure evaluates the performance of bottle bases when they are exposed to a 0.2% solution of NaOH (Sodium Hydroxide) to simulate the failure associated with Stress Cracking.
This procedure evaluates the performance of bottle bases when they are exposed to a 0.1% solution of NaOH (Sodium Hydroxide) to simulate the failure associated with Stress Cracking.
- Tilt Test
This procedure determines the angle at which a bottle will tip and fall once the center of gravity has been overcome on tilting.
- UV/Visible/Near Absorption Spectra
UV/Visible/Near IR Absorption Spectra
This test determines the absorbance values in a material at varying wavelengths.