User guide

Chromatographic Checkout 4
Advanced User Guide 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)
• 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.
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 Verify that the Lit Offset is set appropriately. Typically, it
should be about 2.0 pA for the checkout method.
4 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.
Phosphorus performance
5 If it is not already installed, install the phosphorus filter.
6 Create or load a method with the parameter values listed in
Table 13.