Retention gaps, CW (carbowax, polyethylene glycol), polar 548-2093 Valve Model: 1-1Valve Model Description:

Valve Model: 1-1Valve Model Description: 180° Flow Path 2-portsFluid Path: PTFE/CTFEValve Size: HVNominal Port Diameter: 0

and oxalate are moderately soluble

1 bar for 30 min)

pH 4 RED CALIBRATION STD

Minispike (bottom)

Retention gaps, CW (carbowax, polyethylene glycol), polar 548-2093 Valve Model: 1-1Valve Model Description:The retention gap technique in combination with on column injection allows concentration of a large sample volume in the capillary column. Retention gaps consist of uncoated (no stationary phase), deactivated fused silica capillary tubing. A retention gap must be inert without any noticeable retention (analytes are not retained). Carbowax (CW, polyethyleneglycol, polar) deactivated is suitable for direct aqueous injection. Improve peak shape by