What is the recommended startup procedure for a CORTECS C18 column running the Kairos amino acid method? - WKB205989
ENVIRONMENT
- Startup procedures
- CORTECS C18
- Kairos amino acid method
- LC/MS
ANSWER
Run the column at 0.1 mL/min for 50 minutes in 50:50 acetonitrile/water. This can be flowed to waste.
While the column is in the 50:50 acetonitrile/water, allow the column temperature to reach 55 °C.
After 50 miniutes, flush the column with the starting conditions and slowly raise the flow rate to 0.5 mL/min.
To "break in" a reverse-phase column, some derivatization blanks should be injected while running the standard 4-minute Kairos gradient. Inject 2x's derivatization blanks, and then follow with two to four injections of the derivatized amino acid standard.
ADDITIONAL INFORMATION
It is normal for reverse-phase columns to need four to six injections of standard to condition the new column to run the method.
For additional information, see the Kairos Amino Acid Kit – Low Throughput (100+) Care and Use Manual.
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