ZP's 20 second caffeine sensor

In the videos below we will see multiple examples of ZP's 20 second caffeine test, in tea leaves, tea drink, coffee powder, coffee drink, Red Bull, Monster Energy Drink etc.

https://www.youtube.com/watch?v=zLXZaV2Tfl4	https://www.youtube.com/watch?v=xImXzajKhOc
https://www.youtube.com/watch?v=evvaPfGxVwA	https://www.youtube.com/watch?v=lNvzhSppwJo
https://www.youtube.com/watch?v=nEiqQIyeOKc	https://www.youtube.com/watch?v=eBv_DCSKFvA