Calibration curves

Hello all, I have a question regarding calibration curves. Most curves in my experience are either linear or quadratic (going downwards). Ie saturation occurs at some point I guess. 

I’ve now encountered some analytes that have a quadratic curve going upwards. It’s repeatable and r2>0.99. Is that possible or is there something I’m doing wrong? 

thank you. 

Parents Reply Children
No Data
Was this helpful?