A vial crimper is used to seal vials by compressing a metal ring around the vial's opening, while a vial decapper is used to remove the metal ring from a sealed vial.

There are various types of vial crimpers, including manual hand crimpers, semi-automatic benchtop crimpers, and fully automated crimping machines.

When selecting a vial decapper, consider factors such as the size and type of vials you will be working with, the volume of vials you need to process, and any specific features or capabilities you require.

To achieve precise and consistent results, it is important to use properly calibrated equipment, follow the manufacturer's instructions carefully, and maintain a clean and controlled work environment.