National Chromatography Inco
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NC-225 bonded capillary columns (also called DB-225 / OV-225 type columns) are moderately polar GC columns with a stationary phase of ~50% cyanopropylphenyl + 50% dimethylpolysiloxane.
These columns are mainly used in gas chromatography (GC) for separating polar to moderately polar compounds, especially where isomer separation is important.
