How can I tell the difference between the globetrotter cartridge and the outdoor cartridge?

Although we are currently working on a way to clearly identify the globetrotter cartridge from the Outdoor cartridge, both cartridges presently share the same outer shell and they look alike. When new, there’s a yellow sticker at the bottom of the Globetrotter cartridge where the Outdoor cartridge doesn’t have one. Once in use, the Globetrotter cartridge can be identified by a strong iodine smell and a yellow stain of the screen located at the bottom of the cartridge.

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