6. PROCEDURE
6.1 Fill each container to the label fill weight with the active SCJ formula/product.
6.2 Induction seal the containers with a suitable flexible barrier laminate, polyethylene side to bottle. Apply a polypropylene or suitably lined closure with sufficient torque to ensure a double seal.
6.3 After sealing, invert the containers to coat the inside walls with the agent.
6.4 Place the containers in a vertical position with the cap up, in the oven at the test temperature of 50°C +/- 1°C (122°F +/- 1.8°F). Check the temperature periodically for consistency.
NOTE 1: If it is desired to accelerate the test, under certain situations the SME may allow the test to be conducted at a temperature of 60°C +/- 1°C (140°F +/- 1.8°F). Periodic inspections would be conducted up to 15 days. If a failure occurs, a follow up test at 50°C is required. Furthermore, if a failure occurs at 50°C, a test at room temperature 73.4 ± 3.6°F (23 ± 2°C) may be conducted for an extended period of time to correlate the failure in real time.
6.5 Inspect the containers for environmental stress-crack failure at 24 hours, and subsequently two times per week for 28 days. Remove containers that fail and record for each, failure exposure time, position of failure with relation to mold number or parting line (Fig. 01), and type of failure.
6.5.1 Two most common types of failures:
1) At side corner of bottle (Fig. 02)
2) At globule perpendicular to parting line where front or back sidewall transitions to the base (Fig. 03)