ISBT and Special Protocols

Plastic Technologies Inc. employees are members of the International Society of Beverage Technologists. As members it is our objective to enhance the promotion, development, and dissemination of knowledge relating to the Art and Science of Beverage Technology.

Submitting samples for testing? Please download and complete this form. Follow shipping instructions on the form.

PTI employees have an active role in committees and meetings to promote continuous improvement of quality. PTI can administer a significant number of the Voluntary Standard Test Methods for PET Bottles. See the list below:

  • Physical Performance Tests

    Stress Cracking

    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.

    Top Load

    To insure that the vertical strength of PET bottles is sufficient to meet minimum performance standards for vertical loading as might be encountered during bottle filling, capping and stacking of filled product.

    Hot Fill Distortion

    This procedure evaluates the performance of a heat set bottle when filled with heated water. The methodology used simulates filling and capping as found in production.

    Cystallinity: Gradient Column

    This procedure determines a sample density and correlates that density to crystallinity using theoretical PET amorphous and crystalline densities according to ASTM D1505.

    Burst

    This procedure evaluates the performance of a bottle when the container is pressurized to very high levels. Failure location reveals weak areas of the bottle.

    Thermal Stability

    The Thermal Stability Test is designed to insure that dimensional changes in carbonated PET bottles will not be excessive during their expected lifetime. This is also known as a “creep” test.

  • Reference Test

    Reference Stress Cracking

    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.

  • Carbonation Retention Tests

    FTIR

    This procedure utilizes Fourier transform infrared spectroscopy to measure the CO2 concentration within carbonated beverage containers.