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The single core barrel is the most affordable, most robust type of core tube including a core catcher. It should be used in compact, hard stone formations and in concrete. It can be used as a dry core barrel or an extension core barrel.
No special priority is given to core extraction but rather to breaking through the walls and ceilings. With core extraction with water or air, the ingressing core is pushed upwards through the tip, the core catcher, the scraper and the tube. On interruption and pulling the core catcher is pushed around the core by conicity and broken off. The core can then be removed.