Chromate 4300 - 4.2.10 Cutoff Mode

ChroMate™ ChroMate™ Operator’s Manual Doc. 4300 Rev. E 29
Cubic Spline (Continued):
Description:
4.2.10 Cutoff Mode
Cutoff: Description:
A number of negative controls are read,
followed by a number of positive controls.
Blanking is optional.
¾ COV = X * mean (Nc) + F
• Use this equation if only a negative
control is used to determine the COV.
¾ COV = Y * mean (Pc) +F
• Use this equation if only a positive control
is used to determine the COV.
• For interpretation, you may chose either
the Regular Cut Off Mode (positive >=
cutoff, negative < cutoff), or the Reverse
Cut Off Mode. With the Reverse Cut Off
option, the Samples with values lower
than the cut off are labeled as “positive”.
If you choose this option, be careful to
follow the < and > signs in the prompts
for entering cut offs and ranges.