Alexander Berger's SCR
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So here is another episode to add to the Homebuilders section. Rebreathers are starting to be more slim and streamlined. Also the comfort of the unit is high on the wish list of the builder. These wishes are resulting in very nice units! One of the examples is Alexander Berger's semi closed rebreather. Although not completely homebuilt, his ideas and realization of his rebreather project could be well appreciated!


Here are the highlights of his unit:


  • Semi Closet Rebreather based on Dräger Dolphin techniques.

  • The housing offers place for tanks up to 2 x 4 liters

  • Tanks can be connected via the integrated manifold. In this case you can use 2 gases. Gases can be changed underwater.

  • It's also possible to connect the inflator tubes of your dry suit, and wing to this manifold. There's also a port for the bailout second stage.

  • The SCR can be attached to a back plate or a BCD.

  • You can use the original Dräger first stages as well as Apeks DS4.


Advantages compared to Dräger Dolphin

  • Much more clearly arranged.

  • Provides more options.

  • More gas (up to 8 liters).

  • 2 gases.

  • Gases can be changed underwater.

  • Integrated  bailout system, which always provides the current gas.

  • Much more solid housing.

  • Integrated manifold

  • Optimal tube guiding.




Alexander; Thanks for your kind contribution to my web. I am sure many people like your machine and get in contact with you!
Alexander can be reached here

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