COMMITTEEDRAFT
ISO/CD 15151 | IDF 229
© ISO2010
–
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9
f
2
is the dilution factor of the test solution carried out during themeasurement step (9.3.2.3).
NOTE
The internal standard yttriumwill correct for a dilution.
Theblanks shall bewithin range of detection limit; if not correct the concentrations of the test solutions.
10.2 Expressionof test results
Express the test results to three significant figures.
11 Precision
The values for repeatability and reproducibility limit were derived from the results of interlaboratory tests
carriedout inaccordancewith ISO 5725-1/2.
The values are expressed for the 95% probability level and may not be applicable to concentration ranges
andmatrices other than thosegiven.
11.1 Repeatability
The absolute difference between two independent single test results, obtained using the same method on
identical test material in the same laboratory by the same operator using the same equipment within a short
interval of time, will in not more than 5 % of cases be greater than
(to determine)
% (relative) of the
arithmetic mean of the results, respectively for calcium, copper, iron, magnesium, manganese, phosphorus,
potassium, sodium, and zinc.
11.2 Reproducibility
The absolute difference between two independent single test results, obtained using the same method on
identical test material in different laboratories with different operators using different equipment, will in not
more than 5% of cases be greater than
(to determine)
% (relative) of the arithmetic mean of the results,
respectively for calcium, copper, iron, magnesium,manganese, phosphorus, potassium, sodium, and zinc.
12 Test report
The test report shall specify:
a) all the information required for the complete identificationof the sample;
b) the samplingmethodused, if known;
c) the test methodused, together with reference to this International Standard;
d) all operating details not specified in this International Standard, or regarded as optional, together with
details of any incident that mayhave influenced the result(s);
e) the test result(s) obtained and, if the repeatability has been checked, the final quoted results obtained.
MTE-03
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