Revised System for Expressing Limits
for Carryover Calculations

October 7, 2010

Those of you who follow my writing on cleaning validation know that I use a shorthand way of expressing limits based on L1, L2, L3 and L4. This webinar covers the way I have revised that system so that carryover calculations, whether they are based on a fraction of a dose or a toxicity value, can be dealt with in a more unified manner.

This webinar is applicable to all pharmaceutical manufacturers who set limits by a carryover calculation. This recorded webinar lasts 51 minutes.

Topics covered

  • Carryover calculations
  • Why L1, L2, etc.?
  • Past systems I have used
  • Why I am changing
  • Revised system