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6

Table 4. Precision Results for NIST SRM1849

Certified mean for Chloride = 7010 mg/Kg

Certified mean for Fluoride not provided

Fluoride

(μg/100g)

Chloride

(mg/Kg)

1

193

7600

2

189

7677

3

199

7461

4

191

7207

5

201

7351

6

192

7203

7

200

7562

8

191

7468

9

195

7493

10

187

7289

11

204

7611

12

200

7527

Mean(n=12)

195

7454

SD

5.33

142

%RSD

2.74

1.90

Fluor-02/Chlor-03 (February 2016)

FOR ERP USE ONLY

DO NOT DISTRIBUTE