Using MXT 100% dimethylpolysiloxane with tcep then more MXT-1. Heartcutting EtO from denatured components separatingramps with 20% TCEP then trying analytical column of MXT-1 on end.

Jury still out.
Also going to try THEED 0.8% on Crbpk C from Supelco to affect the acetaldehyde/EtO separation. I hear they also have a 15% THEED to retard alcohols for backflush. Any suggestions?
Oleo