GC Column InertCap 225, 30 m x 0.25 mm ID, 0.25 µm film

InertCap 225 is a medium polar column bonded 50 % cyanopropylmethyl and 50 % phenylmethylpolysiloxane. Cyano group in the stationary phase includes triple bond and retains compounds stronger in accordance with the increase of the number of unsaturated bond by their dipole/dipole interactions. For that reason InertCap 225 shows high separation efficiency for analyses of geometrical isomers.