ISO-11438-4-1993.pdf
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1、INTERNATIONAL STANDARD IS0 1143814 First edition 1993-l 2-01 Ferronickel - Determination of trace-element content by electrothermal atomic absorption spectrometric method - Part 4: Determination of tin content Ferro-nickel - Dosage des Bl m is the mass, in grams, of the test portion; F is the diluti
2、on factor of 2,5. 8.2 Precision 8.2.1 Laboratory tests Six laboratories in four countries participated in the testing of this procedure using two samples of nom- inal composition given in table 1. Samples were analysed three times on different days. 2 Copyright International Organization for Standar
3、dization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 21:06:25 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 11438-4:1993(E) 8.2.2 Statistical analysis 8.2.2.2 One laboratory gave no results for sampl
4、e 1. The same laboratory was rejected as a Dixon outlier for sample 2. 8.2.2.1 Results from the interlaboratory test pro- gramme were evaluated according to IS0 5725 as described in 8.2.2 of IS0 11438-1:1993. The results of this analysis are given in table2. 9 Test report Refer to clause 10 of IS0 1
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- ISO 11438 1993
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