KCl deactivation Lowest polarity alumina column in Shimadzu PLOT columns Low moisture sensitivity reduces the need for frequent regeneration Acetylene elutes before n-butane Methyl acetylene (impurity in 1,3-butadiene) elutes before 1,3-butadiene Similar phases: Rt-Alumina BOND/KCl, GS-Alumina KCl, HP-PLOT Al2O3 KCl, CP-Al2O3/KCl, Aluminachloride PLOT, PLT-AL2O3 Temp. Range: up to 200°C