Burst strength, the pressure at which the bottle bursts, provides an assessment of the overall stability of the bottle. It is important to ensure bottles do not blow up at the filling stage, and filled bottles do not expand excessively during storage or bottle warming during pasteurization process. A TopWave Burst Tester model BR 3000 with ‘Ramp Fill’ was used to measure the burst of the bottles; five bottles were tested from each production run and the results averaged.pressure