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From Bioblast


O2k-Open Support


Template NextGen-O2k.jpg

MitoPedia O2k and high-resolution respirometry: O2k-Open Support 


Pos holder.JPG

The OroboPOS-Holder (POS-Holder), made from blue POM, is screwed into the copper block of the O2k-Main Unit, guiding the OroboPOS-Connector with the OroboPOS sensor head (POS) to the 2-mL O2k-chamber, and keeping the OroboPOS-Connector in a fixed position for sealing the O2k-chamber with the OroboPOS-Seal Tip. In addition, the OroboPOS-Holder fixes the O2k-Chamber in an accurate rotational position by pressing against the angular cut of the glass chamber.

Two units of this item are standard components mounted on the O2k-Main Unit.

Reference: Product details and purchase information


A damaged OroboPOS-Holder may cause medium to leak from the O2k-Chamber

  • The OroboPOS-Holder may be damaged:
  1. During chamber assembly, when fixing the chamber in a wrong rotational position with the O2k-Chamber Holder (from above) before the OroboPOS-Holder is fully inserted, and subsequently screwing tightly the OroboPOS-Holder (see center picture below).
  2. After fully unscrewing the OroboPOS-Holder and forcing during reassembly an improperly aligned holder into the thread of the O2k-Main Unit.
  • We recommend to check before any reassembly the mechanical integrity of the OroboPOS-Holder (see pictures below).
  • Left picture: brand new OroboPOS-Holder, no damage on the thread, no damage on the edge.
  • Center picture: used OroboPOS-Holder, almost no damage on the thread, the edge is slightly damaged.
  • Right picture: heavily used OroboPOS-Holder, the thread is slightly damaged, serious damage on the edge of the aperture.

See Discussion page



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MitoPedia O2k and high-resolution respirometry: O2k hardware, O2k-Open Support, O2k-Respirometry, O2k-FluoRespirometry