Presto's Polariscope for Tanzania is a very useful instrument that is used in most of the PET and Preform industries for quality analysis of the preforms that are used for blow molding of the PET products. The phenomenon of photoelasticity is very common in preforms which occur due to non-uniform distribution of stress on the surface of the preforms. This phenomenon can cause big quality flaws in the final PET products such as bottle and jars. In order to prevent any defective preform from blowing, it is essential for the manufacturers to check the quality of the preform before they are blown. This can be performed easily with the help of the Polariscope. The instrument is capable of detecting various flaws such as photo-elasticity, crystallization defect, flash marks, air bubbles and so forth. In this way, the manufacturers of PET products can save a lot of time and money by rejecting the defective preforms before molding. The equipment offered by Presto is simple and easy to operate and gives very accurate test results.
Presto is a major supplier and manufacturer of highly advanced Polariscope for Tanzania that are widely used by the manufacturers of PET products to identify various defects in the preforms they use for blow molding. The instrument is provided with two different light sources that are the white light source and monochromatic light source. The monochromatic light source is used for detecting the defects that are left by the white light.
The specimen is viewed under polarized light and then it is compared to the defects given in the preform defect chart to identify the type of defect. The instrument is very easy to operate and is open from three sides which allow easy placement and easy viewing of the specimen during the test procedure. The device is provided along with a user manual and a conformance certificate.
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