PET Preform Strain Viewer is the commonly used testing device which is used by the manufacturers in PET & preform industries to ensure the quality of the Preforms and PET products. The testing device creates polarized light to analyze the strain distribution defect in preforms and to remove the defective preforms from the manufactured lot. It offers the best medium to examine the quality of preforms in order to produce the best quality of PET bottles. Presto Stantest offers a wide array of PET Preform Strain Viewer to test the quality of Preforms and PET bottles. It is a well-designed instrument that creates Polarized light to view the defects in preforms appropriately.