Through our internal method (Individual Sensory Analyzes) which is used for Laboratorial quality control in our production, the method I.S.A. was developed in an industrial setting in order to offer supplementary and optional services to our customers.

Through this method all unwanted corkstoppers with TCA or with other odours which might affect the quality of the wine, are removed, checked 1by1. alves1by1 is the commercial logo used in all corkstoppers that have undergone this method.