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State standard of the republic of uzbekistanBog'liq 27608-разблокирован DALINA, Abdulla Qahhor. Paqir qo\'mondonlariISO 27608:2010(E)
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© ISO 2010 – All rights reserved
8.10 Place the cell containing the sample in the sample chamber, position correctly, and close the sample
chamber lid (refer to manufacturer's instruction manual).
8.11 Press the read button and obtain the Lovibond
®
colour values from the display (refer to manufacturer's
instruction manual).
9 Expression of results
Express the results in terms of the following:
a) the
Lovibond
®
colour values displayed by the instrument;
b) the optical path length of the cell to which the result refers.
Only standard cell sizes shall be referred to in the results (see ISO 15305
[5]
).
10 Precision
10.1 Interlaboratory test
Details of an interlaboratory test on the precision of the method are given in Annex A. The values derived from
this interlaboratory test may not be applicable to concentration ranges and matrices other than those given.
10.2 Repeatability
The absolute difference between two independent single test results, obtained with 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 exceed the repeatability limit, r, given in Annex A.
10.3 Reproducibility
The absolute difference between two single test results, obtained with the same method on identical test
material in different laboratories by different operators using different equipment, will in not more than 5 % of
cases exceed the reproducibility limit, R, given in Annex A.
11 Test report
The test report shall contain at least the following information:
a) all information necessary for the complete identification of the sample;
b) apparatus (brand, type, etc., and a statement that the model used is automatic);
c) sample preparation details (heating or filtration, and any comments on sample condition before filtration)
;
d) sample temperature during the measurement;
e) the test method used, with reference to this International Standard (ISO 27608:2010)
;
f)
the optical path length of the cell, or its equivalent, used for measurement;
g) the results obtained, in Lovibond
®
units.
O‘z DSt ISO 27608:2017 (ISO 27608:2010, IDT)
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