1.1 These test methods cover the determination of the breaking strength of glass containers when subjected to internal pressure. These test methods are intended to determine the pressure strength of containers manufactured to contain products reasonably expected to develop a sustained pressure of 138 kPa (20 psi) or greater, after processing. Two test methods are covered as follows:






  Test Method A-Application of Uniform Internal Pressure
     for a Predetermined Period

5 – 7

  Test Method B-Application of Internal Pressure Increasing
     at a Predetermined Constant Rate

8 – 10

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