Combi Kits Consist of one part number that combines one pack of vials and one pack of caps. There is no additional cost and you have the convenience of having only one part number to order.
Convenience Kits Consist of a convenience packs of 100 vials and 100 matching caps. These combos are packaged in a see-through clamshell.
Assembly Kits Consist of a pack of screw vials with assembled matching caps. The vials and caps are assembled in a clean room. This option prevents contamination from entering the vials once the package is opened.