Sorry , I still not clear for this point , why cannot skip because these is option and each lab must be determined during method validation process in local laboratory and I'm not found in another chemical global SOP , why you did start in this SOP. If you are confirm still need to do (can not skip) , I have to accept this fact with you and I thought that I cannot complete and sent to Rina within this week.
11.10 Measurements uncertainty (option)
The uncertainty is determined during method validation process in local laboratory.
11.11 Robustness (option)
The robustness is determined during method validation process in local laboratory.