Calibration weighing error

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.