Degassing small samples for lab tests

[BarrelMonkey]

I'm planning to test pH and TA of my wine post-fermentation, and am concerned that results might be skewed by dissolved CO2. Options that I can think of include:

- Heat to near boiling (may have to correct for evaporation if it's a small sample)
- Just shake it up (low tech and free, but does it work?)
- Pull a vacuum on the sample (I have a small pump I could use but will need to buy a little vacuum flask and stopper)

I'd be curious to know what methods others use, particularly if anyone has any before/after comparisons!

 

[CDrew]

You could also put your sample in the blender for a few moments. Shaking and vacuum will also work, but slower

I wouldn't heat it. Not sure why, but that just seems wrong.

 

[Johnd]

Heating is ok, but no need to heat above 80°F, plus a good round in the blender, strain off all of the solids, and you’re left with a really solid sample. IIRC, this is the method recommended for the Vinmetrica tests……