Calibration weighing error

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Calibration weighing error siwei chen  2019-09-06
 

Hi, I am encountering an calibration weighing issue here. Every time I am trying to apply weighing 1/(x^2), it shows there is an Error: Matrix must be positive definite. Does anyone have experience with this? Thanks.

 
 
Vahid F responded:  2019-09-06

You may need label your 0 calibrant on your calibration curve as Blank and not Standard.

-Vahid