or
SGE Capillary GC Column BPX70 30MX0.25mmIDX0.25um 70% Cyanopropyl GC-MS low bleed 50[degree]C to 250/260[degree]C fatty acid methyl esters(FAME) carbohydrates pharmaceuticals DB-23 Rtx-2330 SP-2330 007-23 AT-Silar