OVIs by Dynamic Headspace and Gerstel MACH on Rtx-WAX (G16)

* septum components

Oven
Columns	Rtx-WAX (G16) 20 m, 0.18 mm ID, 0.4 µm,
	using IP Deactivated Guard Column 5 m, 0.32 mm ID (cat.# 10044)
	with Universal “Y” Press-Tight Connector (cat.# 20405)

Standard/Sample	Residual Solvents Class 2 - Mix A (cat.# 36271)
	Residual Solvents Class 2 - Mix B (cat.# 36272)
Diluent:	0.5mL DI water/~0.2g sodium sulfate in 20mL headspace vial
Injection	headspace-trap split (split ratio 20:1)
Headspace-Trap
Instrument:	Tekmar HT3
Inj. Temp.:	220 °C
Transfer Line Temp.:	220 °C
Valve Oven Temp.:	220 °C
Oven Temp.:	250 °C
Standby flow rate:	50 mL/min
Trap Standby Temp:	40 °C
Trap Sweep Temp:	40 °C
Preheat Mixer:	On
Preheat Mixer Time:	2.00 min
Preheat Mixing Level:	5
Preheat Mixer Stabilize Time:	0.50 min
Sample Temp.:	80 °C
Sample Equil. Time:	15.00 min
Sweep Flow Rate:	75 mL/min
Sweep Flow Time:	5.00 min
Dry Purge:	10.00 min, flow 100 mL/min @ 25 °C
Desorb Preheat Temp:	245 °C
Desorb:	1.00 min @ 250 °C
Trap Bake Temp:	260 °C
Trap Bake Time:	6.00 min
Trap Bake Flow:	450 mL/min
Oven Temp.:	250 °C
Carrier Gas	He, constant flow
Flow Rate:	0.99 mL/min

Detector	FID @ 250 °C
Make-up Gas Flow Rate:	45 mL/min
Instrument	Agilent/HP6890 GC
Notes	Gerstel Modular Accelerated Column Heater (MACH): 35°C (2 min.) to 60°C at 100°C/min. (hold 1 min.), to 200°C at 40°C/min. (hold 2 min.)

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