The majority of clear bottles and other product containers that are used by manufacturers are typically produced through high-volume, high-speed blow molding machines. The standard and most commonly made bottle types created through PET blow molders include water bottles, juice bottles, bottles for carbonated beverages, sport drinks, and containers for other liquid products like food sauces, food oils, and liquid soaps, shampoos, and detergents. (PET stands for Polyethylene Terephthalate; a thermoplastic polymer resin that’s used in the making of injection molding and blow-molded bottles and similar products.) Based on manufacturing quotas, quality control assurances, and getting the product to market, a highly reliable method of leak testing the bottles and other containers must be in place. The purposes of leak testing bottles in the blow molding process are to:

• Test product quality to ensure that the bottles will remain impenetrable and hold pressure, including against the stresses of transportation and getting the products to market;
• Check for and address the most likely critical defects in the formed products;
• Employ a full-proof inspection process that far outweighs a random sampling method;
• Monitor the blow molding process by way of the products generated; thereby addressing any manufacturing pitfalls prior to full high-volume runs.