CAPSULE FOR THE PREPARATION OF A NUTRITIONAL PRODUCT IN A DEVICE ADAPTED TO SUPPLY LIQUID INTO THE CAPSULE, SAID CAPSULE (1A, 1B) COMPRISING: AT LEAST ONE COMPARTMENT (13) CONTAINING NUTRITIONAL INGREDIENTS (14) FOR THE PREPARATION OF THE NUTRITIONAL PRODUCT IN COMBINATION WITH THE SUPPLIED LIQUID, A FILTER (18, 20) ADAPTED FOR REMOVING CONTAMINANTS CONTAINED IN THE LIQUID, WHEREIN IT COMPRISES A SELECTIVELY OPENABLE GAS INLET (34) WHICH IS PLACED ON OR IN THE CAPSULE TO ALLOW GAS INTRODUCTION FROM OUTSIDE THE CAPSULE (1A, 1B) INTO THE COMPARTMENT (13) WITHOUT PASSING THROUGH THE FILTER (20). FIGURES 4 AND 9
