Posted by ~christina~ on Friday, March 20, 2009 at 7:37pm.
Either method works. Which method you select depends on how you graphed your calibration graph using standard solutions over a range of concentrations. For more information, download the online PDF file:
http://www.ffcr.or.jp/zaidan/FFCRHOME.nsf/7bd44c20b0dc562649256502001b65e9/146fd852cd5e269049256f32001a133e/$FILE/B14.pdf
You can compare the two methods by graphing the data from your set of standard solutions both ways and determining the concentration of an unknown using each graph.
Thank you GK
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