Once you've got the device families straight, the next question is usually nicotine type. Our guide on Nicotine Salts vs. Freebase breaks down the differences and when to use each. For the business side, our POS comparison can help you track which families are actually selling.

A quick note: no compatibility checker replaces your own diligence. Always double-check manufacturer specs, and when in doubt, ask the supplier directly. The tool is a shortcut, not a substitute for good judgment.