

Presto supplies the high quality of Surface Strain Viewers to view the strains on PET bottles. The machine helps to observe the flaws and faults on transparent bottles or preforms. The device is a good quality checker improving the quality of PET and Preforms. The instrument is available in Delux Model and Computerized Model. The operating principal of machine is that any change in the refractive index of a material shows the presence of strain, and that is responsible for the low quality of the materials.
Presto manufactures and designed both models of surface strain viewers using the best quality of raw materials for durability and correct precision level. There are several sizes available to test the quality of glass and preform surface as required. The device has metallic base painted in autumn gray and blue color. The zinc/chrome plating is provided for the resistance against corrosion. The machine helps to check the quality and transparency of the materials.
The device has a significant role in solving the issue of Photoelasticity, where the refractive index of the material changes where there is uneven strain distribution. Photoelasticity is a big trouble for the manufacturers of PET bottles and plastics. The machine is very helpful to solve the issue. This is the best device that have prolonged service life with a precise testing procedures.
To Know more about information visit- Polariscope Strain Viewer for Glass and Plastics
To Know more about information visit- Polariscope Strain Viewer for Glass and Plastics



Presto provides the Polariscope, an exceptionally effective strain viewer designed to assist manufacturers in testing the quality and transparency of their products, thereby ensuring the highest standards of quality assurance for customers. The Polariscope operates on the principle that variations in refractive index indicate differing strain distributions, resulting in reduced material transparency.
Registered Design Patent No. 252609

Presto's Glass & Plastic Polariscope - Strain Viewer is the best and highly effective testing device which is used to measure the residual stresses and strains that are introduced during the manufacturing process of the products that severely affects the strength of the product.

The Polarized Light Strain Viewer uses polarized light to detect flaws in molded plastic, PET and Preforms, Glass, Transparent Materials, Acrylics and other materials that cannot be viewed with the naked eye...

The strain inspection is performed to inspect the strain on transparent materials such as glass, acrylic and PET bottles. The inspection helps to reduce the burden of the manufacturers from the last time quality issues...