Just pull off the paper tab. Push it and turn until it is on tight. Pull off the outer cap and then the inner cap. Oh, I almost forgot. Не надевайте колпачок обратно на иглу, чтобы не уколоться. Embora as diretrizes supra forneçam uma estrutura básica de modo a o https://www.youtube.com/watch?v=k4PCcI7-tRQ