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|Column||20% OV-101, 0.1% CW-1500, 100/120 mesh on DiatoSorb-WHP, SilcoSmooth tubing, 3 m, 1/8 in OD, 2 mm ID|
|Conc.:||Equal proportions of neat compounds|
|Inj. Vol.:||0.1 µL on-column|
|Inj. Temp.:||200 °C|
|Oven Temp.:||100 °C (hold 5 min)|
|Carrier Gas||He, constant flow|
|Flow Rate:||40 mL/min|
|Detector||FID @ 250 °C|
|Instrument||Agilent 7890B GC|
|Notes||The particle size distribution of DiatoSorb material is more uniform than that of commercially available diatomaceous earth material. For this application, the pressure required to achieve a flow rate of 40 mL/min He (@ 100 °C) on a diatomaceous earth packed column is 50 psi, whereas it is only 33.7 psi on a DiatoSorb packed column. Furthermore, the narrower particle size distribution of the DiatoSorb material results in highly efficient columns.|