Photoelasticity is the phenomenon which is usually found in the crystalline products such as PET Bottles. The presence of photoelasticity shows the unequal and non-uniform strain distribution that degrades the strength of the PET Bottles. To ensure the best quality of the PET products, it is necessary to ensure that there is no photoelasticity present in the products. The Photoelasticity Strain Analyser is the best testing machine which is used to detect the strains and defects on the surface of the PET bottles. Presto Stantest offers high-quality of Polariscope – Photoelasticity Strain Analyzer to ensure the quality of the PET products and remove the chances of flaws in the production of the PET products.