InertCap 1701MS manufactured by GL Sciences Inc. is a medium polar column incorporating 14 % cyanopropylphenyl and 86 % dimethylpolysiloxane, designed for GC/MS. Similar with InertCap 1301, InertCap 1701MS contains cyano groups. The polarity of InertCap 1701MS is stronger than that of InertCap 25. It is suitable for pesticides screening analyses.