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H. Retests
1. General
1.1 If the test sections or specimens specified for a test are not properly taken and prepared, the test results obtained with them shall be invalid. The tests shall then be repeated on properly prepared test specimens.
1.2 If, in a properly performed test, the requirements are not met, then, before the corresponding unit test quantities are rejected, retests may be carried out subject to the conditions stated below. Retests are not allowed if it is suspected that the wrong material is concerned.
1.3 If the unsatisfactory result of a test is due to obvious defects in the execution of the test or to a narrowly defined fault in the test specimen, the result shall be disregarded and the test in question shall be repeated on a test specimen of the same type which shall be taken from the same test section. This also applies to tensile specimens which, when tested, fracture outside the valid measuring length as defined in D.3.4.
1.4 If the unsatisfactory result of a test is attributable to improper heat treatment of the products, they may be resubjected to heat treatment. Subsequently the entire test shall be repeated, and the original test result shall be disregarded.
1.5 The manufacturer may also follow the procedure described in 1.4 in the case of those products which, according to the specifications, may be supplied without heat treatment but which have failed to meet the requirements in this condition.
1.6 If, under test, a large proportion of the products fails because of constantly recurring manufacturing defects, the entire delivery may be rejected.

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