The Stopper-Spacer (or gas spacer) is used to set the O2k-Stopper into a standard position for a fixed gas phase above the aqueous phase in the O2k-Chamber, during air calibration or for injection of nitrogen, argon or oxygen into the gas phase; Stopper-Spacer thickness of 4mm (a deviation of +/- 10 % possible).
One Stopper-Spacer is included in the O2k-Assembly Kit, two in the O2k-TPP+ ISE-Module as standard components.
