So I just got my new Sous Vide in and I wanted to give it a test run with some chicken breast. It says put temp at 146 for 1-4 hours. How do I know when the chicken is done? Just have to pull it and check the IT? So I just got my new Sous Vide in and I wanted to give it a test run with some chicken breast. It says put temp at 146 for 1-4 hours. How do I know when the chicken is done? Just have to pull it and check the IT?