The Agr•TopWave Light Polarizer, Figure 1, is a flexible easy-to-use tool for viewing the material flow and internal stresses of PET preforms and bottles. The large polarized viewing windows and polarized back light source make the display of the preforms exceptionally clear.The adjustable position of the inspection unit enables the instrument to be used in several ways, depending on the operator’s preference.
A poster illustrating the appearance of preforms in polarized light is shipped with the Polarizer. The poster shows typical light patterns in preforms having several of the most-commonly occurring problems.