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11-150-CYx5
Phenmetrazine hydrochloride
pH 4 RED CALIBRATION STD
7WW QC STANDARD #1
1402834-57-4
Retention gaps, CW (carbowax, polyethylene glycol), polar 548-2093 11-150-CYx5The 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
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