AOAC Final Action Methods in 2017

P ACQUETTE & T HOMPSON : J OURNAL OF AOAC I NTERNATIONAL V OL . 101, N O . 2, 2018 547

Parameter 1 a 2 b 3 c 4 d 5 e 6 f 7 g 8 h 9 i 10 j 11 k 12 l 13 m 14 n 15 o 16 p 17 q 18 r Overall mean of all data (grand mean) t 0.0041 0.0143 0.0014 0.0141 0.0012 0.0005 0.0054 0.0011 0.0025 0.0012 0.0003 0.0007 0.0004 0.0004 0.001 0.0009 0.0011 0.0006 S r 0.00016 0.00040 0.00013 0.00057 0.00006 0.00009 0.00010 0.00009 0.00007 0.00030 0.00008 0.00006 0.00010 0.00010 0.00005 0.00055 0.00051 0.00010 S R 0.00022 0.00057 0.00037 0.00061 0.00033 0.00028 0.00021 0.00043 0.00015 0.00046 0.00017 0.00019 0.00032 0.00026 0.00017 0.00060 0.00074 0.00021 RSD r 4.0 2.8 9.4 s 4.1 5.1 s 18 s 1.8 8.4 s 2.6 25 s 26 s 9.1 s 26 s 24 s 4.8 61 s 46 s 16 s RSD R 5.3 4.0 27 s 4.3 28 s 57 s 3.9 39 s 6.1 38 s 55 s 27 s 79 s 65 s 17 s 67 s 67 s 35 s

Repeatability limit r (r = 2.8 × s r ) 0.00046 0.00113 0.00037 0.00160 0.00017 0.00025 0.00027 0.00026 0.00018 0.00083 0.00022 0.00018 0.00029 0.00027 0.00013 0.00154 0.00142 0.00027 Reproducibility limit R (R = 2.8 × s R ) 0.00060 0.00160 0.00104 0.00171 0.00094 0.00079 0.00059 0.00119 0.00043 0.00128 0.00046 0.00052 0.00088 0.00073 0.00048 0.00169 0.00206 0.00059 HorRat value 0.20 0.19 0.87 0.20 0.90 1.61 0.16 1.23 0.22 1.22 1.44 0.79 2.14 1.78 0.53 2.06 2.11 0.99 Repeatability limit SMPR 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 Reproducibility limit SMPR 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 Molybdenum u Year of interlab test 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 No. of labs submitting results 8 8 8 8 8 8 8 7 8 8 8 8 8 8 8 8 8 8 No. of outliers (individual replicates) 0 0 1 0 0 0 0 2 0 1 0 0 0 0 0 0 0 0 No. of accepted results 16 16 15 16 16 16 16 12 16 15 16 16 16 16 16 16 16 16

Overall mean of all data (grand mean) t 0.0061 0.0202 0.0021 0.0158 0.0014 0.0015 0.0040 0.0006 0.0019 0.0004 0.0021 0.0026 0.0013 0.0018 0.0034 0.0022 0.0023 0.0024 S r 0.00009 0.00064 0.00006 0.00019 0.00005 0.00005 0.00006 0.00001 0.00003 0.00002 0.00004 0.00004 0.00003 0.00001 0.00005 0.00004 0.00004 0.00002 S R 0.00022 0.00069 0.00011 0.00037 0.00006 0.00007 0.00015 0.00002 0.00006 0.00002 0.00005 0.00007 0.00006 0.00005 0.00011 0.00009 0.00006 0.00005 RSD r 1.5 3.2 3.1 1.2 3.5 3.4 1.5 2.1 1.4 4.4 1.7 1.7 2.9 1.1 1.6 1.9 1.7 1.0 RSD R 3.6 3.4 5.2 2.4 4.5 4.4 3.8 3.7 2.9 5.6 2.3 2.8 4.6 2.7 3.2 4.2 2.8 2.3 Repeatability limit r (r = 2.8 × s r ) 0.00026 0.00179 0.00018 0.00053 0.00014 0.00014 0.00017 0.00003 0.00007 0.00005 0.00010 0.00012 0.00011 0.00005 0.00015 0.00012 0.00011 0.00007 Reproducibility limit R (R = 2.8 × s R ) 0.00061 0.00193 0.00030 0.00104 0.00017 0.00019 0.00043 0.00006 0.00016 0.00006 0.00014 0.00020 0.00017 0.00013 0.00031 0.00026 0.00018 0.00015 HorRat value 0.15 0.17 0.18 0.11 0.15 0.15 0.15 0.11 0.10 0.15 0.08 0.10 0.15 0.09 0.12 0.15 0.10 0.08 Repeatability limit SMPR 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 Reproducibility limit SMPR 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 Selenium Year of interlab test 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 2016 No. of labs submitting results 8 8 8 8 8 8 8 6 8 7 8 7 8 8 8 8 8 8 No. of outliers (individual replicates) 0 0 0 0 1 2 0 4 0 0 0 2 1 0 1 0 1 0 No. of accepted results 16 16 16 16 15 14 16 8 16 14 16 12 15 16 15 16 15 16 Downloaded from https://academic.oup.com/jaoac/article-abstract/101/2/536/5653941 by guest on 05 May 2020

Overall mean of all data (grand mean) t 0.0028 0.0119 0.0032 0.0084 0.0022 0.0008 0.0044 0.0023 0.0024 0.00003 0.0028 0.0029 0.0016 0.0032 0.0023 0.0027 0.0016 0.0017 S r 0.00006 0.00050 0.00008 0.00028 0.00010 0.00004 0.00012 0.00005 0.00007 0.00004 0.00009 0.00008 0.00005 0.00010 0.00005 0.00012 0.00007 0.00007 S R 0.00018 0.00052 0.00017 0.00046 0.00010 0.00004 0.00026 0.00013 0.00014 0.00004 0.00011 0.00011 0.00008 0.00013 0.00008 0.00012 0.00009 0.00009 RSD r 2.3 4.2 2.5 3.3 4.8 4.7 2.6 2.4 2.8 151.0 s 3.3 2.6 3.0 3.1 2.0 4.4 4.6 4.3 RSD R 6.5 4.4 5.4 5.5 4.8 4.7 6.0 5.5 6.0 151.0 s 3.9 3.7 5.0 4.2 3.6 4.5 5.8 5.3

Sample

Table 3. ( continued )