Permanent Gases on Rt-Msieve 5A (15 m x 0.53 mm x 50 μm)

Injection
Column	Rt-Msieve 5A, 15 m, 0.53 mm ID, 50 µm (cat.# 19721)
Standard/Sample	Permanent gases (custom mix)
Inj. Vol.:	30 µL split (split ratio 10:1)
Liner:	Topaz 2.0 mm ID straight inlet liner (cat.# 23313)
Inj. Temp.:	150 °C
Oven
Oven Temp.:	30 °C (hold 10 min)
Carrier Gas	H₂, constant pressure (1.7 psi, 11.7 kPa)

Detector	TCD @ 200 °C
Instrument	Agilent 7890B GC
Notes	Resolution (Ar/O₂) = 1.4 Asymmetry (CO) = 1.1 Note that the sample was introduced onto the column using syringe injection and a high split ratio, which results in a very narrow sample band. Any dead volume in the system (e.g., from using a sampling valve, large sampling loops, or even from using splitless injection) will result in peak broadening, which might decrease resolution between the peaks or even result in peak coelution.

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