Skip to main content
The option to select the page translation feature has moved. Please log in to see translated content.
Thermo Fisher Scientific

Sample Analysis Carryover

  1. Last updated
  2. Save as PDF

Issue

If excessive carryover is noticed by analyzing a high concentration standard and then analyzing a blank, and the measured concentration of the blank is greater than twice the method detection limit or close to the report limit.

Environment

  • iCAP Q
  • iCAP RQ
  • iCAP TQ
  • iCAP 6000
  • iCAP 7000
  • iCAP Pro

Resolution

Replace the autosampler probe.  A modified rinse using an addition of 9 uM of Potassium Bromate can help as well.

Cause

The autosampler probe can break down over time and become porous trapping elements that have a tendency to particulate out of solution.