User guide

Chromatographic Checkout 4
Advanced User Guide 81
To Check NPD Performance
1 Gather the following:
• Evaluation column, HP- 5 30 m × 0.32 mm × 0.25 µm
(19091J- 413)
• NPD performance evaluation (checkout) sample
(18789- 60060)
• 4- mL solvent and waste bottles or equivalent for
autoinjector.
• Chromatographic- grade isooctane
• 2- mL sample vials or equivalent for sample.
2 Verify the following:
• Capillary column jet installed. If not, select and install a
capillary column jet.
• 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 If present, remove any protective caps from the inlet
manifold vents.
4 Install the evaluation column. (See the procedure for the SS,
PP, COC, MMI, or PTV in the Maintenance manual.)
• Bake out the evaluation column for at least 30 min at
180 °C. (See the procedure for the SS, PP, COC, MMI, or
PTV in the Maintenance manual.)
• Be sure to configure the column
5 Create or load a method with the parameter values listed in
Table 11.
Table 11 NPD Checkout Conditions
Column and sample
Type HP-5, 30 m × 0.32 mm × 0.25 µm
(19091J-413)
Sample NPD checkout 18789-60060
Column mode Constant flow