Yes, then you need to use the GORE® tubing:
Or you can buy a high resistance kit containing both O-rings, sealing gaskets and two pieces of GORE® tubing:
For measurements in ethanol we recommend that you use Kalrez O-rings and sealing gaskets as the standard Viton material might swell:
The pump tubing needs to be exchanged as well. For ethanol, the MHSL Tygon tubing is suitable:
The maximum volume (of the outer Teflon® container) is roughly 2.5 mL. However, we do not recommend that you use the open module with larger volumes than 400 mL. The smallest volume (depending on the viscosity of the bulk liquid) is 30–50 mL.
The Dri-Ref-2SH should not be stored in either of the fluids, because they will damage the electrode. It should only be stored in 3 M KCL solution. This is the same solution that is used to fill the electrode, and as such it provides an isotonic environment for the electrode, which keeps the porous membrane properly conditioned.
The electrode was designed for use in physiological solutions. It is not known how well the electrode functions as a reference in an ethanol environment.
The ferrules are made of chlorotrifluoroethylene (CTFE), which is very resistant to most chemicals, except THF and some halogenated solvents. It is resistant to all inorganic corrosive liquids (acids included) but swells in ketones.
The nuts are made of polyphenylene sulphide (PPS), which is very resistant to all solvents, acids and bases.