Quality first supplies Stress Crack Tester which is designed to test the internal stress in bottle base and for determining the stress crack resistance of blow-molded PET carbonated soft drink bottles by measuring the propensity for base cracking upon exposure to an aqueous sodium hydroxide solution under a controlled environment, so that to estimate the long term behavior of bottles.
Typically PET environmental Stress Cracking originates around the base of the bottle. There are many factors which can cause it. Some of them are described below:

• The Intrinsic Viscosity of the Preform used to blow the bottle.
• Control of process and cooling parameters during the moulding process.
• Contact with line conveyer lubricants during manufacturing.
• Contact with solvents and other chemical based cleaning agents while on the shelf.

The tester is available in two configuration. One is fully automatic and the other is semi automatic. For further details feel free to contact us. We will serve you with best of our abilities.