Hello, if your analysis procedure based on international method or you made full validation for your method of analysis with the use of standard reference materials and you made calculation of SD so +-2xSD will be your lower and upper limits in your QC chart for deviation in your results. And all your results should be within this ranges which is not so difficult. How to use QC chart and how to validate AAS method of analysis please see attachments.

Hope this info will help you.

Good luck.!

Please look at the following below link and the attached file may help you in your analysis:

http://www.fao.org/docrep/014/i2441e/i2441e00.pdf

Thanks

good

Hello, if your analysis procedure based on international method or you made full validation for your method of analysis with the use of standard reference materials and you made calculation of SD so +-2xSD will be your lower and upper limits in your QC chart for deviation in your results. And all your results should be within this ranges which is not so difficult. How to use QC chart and how to validate AAS method of analysis please see attachments.

Hope this info will help you.

Good luck.!