Photoelasticity is a powerful tool for analyzing stress in bidimensional and three-dimensional problems. In the last years the technique renewed the scientific community s interest due to adaptation of modern acquisition and image digital processing techniques. One of the most promising field is called RGB Photoelasticity. It quantifies the color as an unique combination of the intensity levels of Red, Green and Blue components. It is a powerful methodology,even so of easy understanding and application in industrial enviroment.A traditional application of the photoelasticity is in the inspection of residual stresses in glass components, using the specification ASTM F218. That specification establishes two procedures for the determination of the isocromatics fringe order: one of them quantitative and anotehr one qualitative. The glass has very low birefringence, so that its optic response is basically in gray tones. In the qualitative procedure the specification F218 recommends the use of a full - wave plate. With this simple procedure the optical answer is changed. It is possible to obtain colors near the passage of the red to blue, what simplifies the analysis too much. The application of RGB photoelasticity to glass transforms the qualitative method in quantitative: the color is not more an abstract parameter, but a number. This dissertation analyzes the necessary procedures to apply RGB photoelasticity to the glass industry. The specification F218 recommends that the full wave plate must be inserted with its principal direction aligned to the principal direction of each analyzed point. A implification to that procedure was proposed: to use only one position of the filter to analyze all the points. The difference among the two procedure was researched; the results obtained following the specification and using the simplified procedure were compared. The method has been applied to two cases: a stem and a lamp bulb. In the both cases, a component in the acceptable condition and another in the non-acceptable condition were analyzed, in order to show their states of residual stresses using the RGB photoelasticity.