Stress Crack: Caustic Method, 3 or 4 hour
| Sample Type | Required Quantity | Equipment Used |
| Bottles |
25 |
Carbonator |
Purpose
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.
Description
Bottles are carbonated to 4.3° ± 0.2 volumes and allowed to come to
equilibrate to room temperature overnight. Once the bottles are at room
temperature, they are placed in a 0.1% Sodium Hydroxide solution for 3
or 4 hours (some customers prefer the longer test times to better
differentiate between samples because failures are not always observed
within 3 hours). The performance of the bottle is determined by the
average time to failure of the sample set.
Video Demonstration
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