Page:NIOSH Manual of Analytical Methods - 5527.pdf/5

 TR IPHEN YL TIN CH LOR IDE: ME TH OD 5527, Issue 1, dated 1 5 Ma rch 2003 - Page 5 of 5 16. 17. 18. 19.

After the last injection, disconnect HPLC column from ICP instrument, and allow water to run through the ICP for 15 min. Flush HPLC column with a mixture of 70% methanol and 30% water and cap. Close oxygen valve and change Flush Step setting on ICP to 1. Turn off ICP following typical shut-down procedures.

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition