FV 도포 직후 초기 1분 동안 3 ml 의 증류수에 담갔으며 이후 새로운 증류수에 1시간 동안 담갔다.
Immediately after FV application, it was immersed in 3 ml of distilled water for an initial 1 moment and then immersed in fresh distilled water for one hour.