Control

Relative accuracy
Profile of accuracy (NF V03-110)
‣The risk of the analyst at 95% confidence level
‣The risk of the client with a postulated amount
(80%) of results within acceptable limits
Profile of accuracy
1
0,8
0,6
0,4
0,2
0
-0,2
1 2 3 4 5 6 7 8 9 10 11 12
-0,4
-0,6
-0,8
-1
Concentration in ng/L
Low er tolerable limit Low er acceptable limit Bias Upper acceptable limit Upper tolerable limit
28
Guy Jamet – STRBG