Different defects like cracks and strains present in PET & preform products may affect their quality. Testing these defects will help the manufacturers to gain confidence in their product quality. Presto has designed a high-quality lab testing instrument known as Polariscope Strain Viewer-NXG.


This is one of the high-quality lab testing instruments that helps the manufacturer in testing the quality and transparency of PET preforms. It is based on the principle that any change in refractive index is due to different strain distributions and this leads to lower transparency of the material.

With Polariscope Strain Viewer, the molecular birefringent flow lines (fringes) can be seen in color but the black iso clinic lines are visible when the preform axis is parallel to the polarizing axis of the viewer.
This NXG model comes with highly advanced features that make it easy for manufacturers to test the defects and strains present in the products.
The Polariscope strain viewer is a powerful testing instrument that allows users to easily manage their data. With the use of this quality testing instrument, manufacturers can create product identification, company, check by details, and much more. Plus, all of this information can be managed easily with the help of this quality lab testing instrument. This makes it easy for users to keep track of their testing process and make sure that the quality of products will be delivered to the customers.

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