Rubber without shadow of albinism is a widespread problem, but because albinism is not serious, film and thin, generally difficult to find. Now metal glass viscosity of glue on the market there are more or less the issue. Take a glass, gum drops on it, and put it under the lights according to 1-2 minutes, take out the observation, so that you can quickly test rubber without shadow of albinism. Albinism and directly related to the film thickness. Albinism is independent of the degree and intensity of glue!