Gas switching procedure with 3 stages

The addtion to the interview with Achim, taken by Mike van Splunteren on how to handle 3 stages. Here´s the underwater part. The Gas switching procedure with 3 Stages.
For all the people commenting that this is only without gloves, etc...:

https://www.youtube.com/watch?v=urT4WtKQaDw&t=2s

Please keep in mind that this is only for informative purpose and not a course! To do this typ of dives, proper training is essential.
PLEASE CHECK MY NEW PROJECT:
https://www.youtube.com/watch?v=TVFbpu_x9js&t=9s

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in English: https://www.amazon.de/-/en/Achim-R-Schl%C3%B6ffel/dp/3738638938

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Видео Gas switching procedure with 3 stages канала InnerSpace Explorers - ISE