Microsoft PowerPoint - FINAL-AOAC StandardsDevDebpres8-2018

Table 6: Predicted Relative Standard Deviation of Reproducibility (PRSD R )

Concentration, C

Mass fraction, C

PRSD(R) (%)

100 %

1.0

2

1 %

0.01

4

0.01%

0.0001

8

1 ppm

0.000001

16

10 ppb

0.00000001

32

1 ppb

0.000000001

45

Table excerpted from: Definitions And Calculations Of Horrat Values From Intralaboratory Data, AOAC INTERNTIONAL, Horrat for SLV.doc, 2004-01-18.