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Cross cut test of a paint coating


Cross cut test of a paint coating
Presentation for participants
Reference of the ILC: AC18PC
References of test methods: ISO 2409
Frequency: Each year
Main characteristics Rating of the appearance of the cross-cut surfaces
Other characteristics -
Caution: The number of determinations may be low for the secundary characteristics, what may make inefficient the comparison between laboratories
Determination of the assigned values (“true values” for each characteristic):
By statistical computation of the totality of the results with possible selection on competence criteria (accreditation, validation by a reference body, quantity of tests performed in the year), test to detect possible collusion, merging of results not obtained in reproductibility conditions, suppression of technically unvalid results.
Type of statistical computation:
Results are expressed as a choice between several possibilities (categories)
Number of samples per participant: 6
Product submitted to tests: Paint coating (on steel)
Type of samples: Plates
Approximate dimensions of samples: ± 150x100x1 mm
Specific preparation to be performed by the participant:  None (other than possible necessity to adapt dimensions of the test specimen to the equipment of the participant)