Chromatographic Checkout 6
Operation Manual 91
To Check FPD Performance (Sample 5188-5953)
To check FPD performance, first check the phosphorus
performance, then the sulfur performance.
Preparation
1 Gather the following:
• Evaluation column, HP- 5 30 m × 0.32 mm × 0.25 µm
(19091J- 413)
• FPD performance evaluation (checkout) sample
(5188- 5953), 2.5 mg/L (± 0.5%) methylparathion in
isooctane
• Phosphorus filter
• Sulfur filter and filter spacer
• 4- mL solvent and waste bottles or equivalent for
autoinjector.
• 2- mL sample vials or equivalent for sample.
• Chromatographic- grade isooctane for syringe wash
solvent.
• Inlet and injector hardware (See “To Prepare for
Chromatographic Checkout.”)
2 Verify the following:
• Capillary column adapter installed. If not, install it.
• Chromatographic- grade gases plumbed and configured:
helium as carrier gas, nitrogen, hydrogen, and air.
• Empty waste vials loaded in sample turret.
• 4- mL vial with diffusion cap filled with isooctane and
inserted in Solvent A injector position.
3 Replace consumable parts (liner, septum, traps, syringe,
and so forth) as needed for the checkout. See “To Prepare
for Chromatographic Checkout.”
4 Verify that the Lit Offset is set appropriately. Typically, it
should be about 2.0 pA for the checkout method.
5 Install the evaluation column. (See the procedure for the
SS, PP, COC, MMI, or PTV in the Maintenance manual.)
• Set the oven, inlet, and detector to 250 °C and bake
out for at least 15 minutes. (See the procedure for the
SS, PP, COC, MMI, or PTV in the Maintenance manual.)
• Be sure to configure the column.
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