Typically PET environmental Stress Cracking originates around the base of the bottle. There are many factors which can cause it, such as the Intrinsic Viscosity of the Preform used to blow the bottle; control of process and cooling parameters during the molding process; contact with line conveyer lubricants during manufacturing; contact with solvents and other chemical based cleaning agents while on the shelf, etc.

Performance of samples can be evaluated when the base of the bottle is immersed in a NaOH (Sodium Hydroxide) solution which simulates failure associated with Stress Crack. Prior to immersion the bottles are filled (to fill level) with water and pressurized. Failure results in a pressure loss or burst of the bottle.

It is available in Semi Automatic or Full Automatic configuration and the client can choose between 6 or 12 test heads.