ASTM D3522 Standard Test Method for Applied Coating Wax and Impregnating (Saturating) Wax in Corrugated Board Facing
11. Report
11.1 Report which facing of the corrugated board was tested and report the completed test on the facing as follows:
11.1.1 Impregnated wax in facing, weight percent.
11.1.2 Applied coating wax weight on facing, grams per square metre.
12. Precision and Bias
12.1 The precision of the method as obtained by statistical examination of interlaboratory test results is as follows:
12.1.1 Repeatability - The difference between successive test results, obtained by the same operator with the same apparatus under constant operating conditions on identical test material, would in the long run, in the normal and correct operation of the test method, exceed the following values only in one case in twenty:
18 % of the mean for impregnating wax content in facing
5 % of the mean for applied coating wax on facing
12.1.2 Reproducibility - The difference between two single and independent results, obtained by different operators working in different laboratories on identical test material, would in the long run, in the normal and correct operation of the test method, exceed the following values only in one case in twenty:
20 % of the mean for impregnating wax content in facing
6 % of the mean for applied coating wax on facing
NOTE 7 - The precision data were obtained on two samples having a surface wax coating of 35 to 40 g/m2 and an impregnating wax content of 5 % and 12 %. It is anticipated that precision would be considerably impaired at very low percentages of impregnating wax.
12.2 Bias - The procedure for measuring applied coating and impregnating wax in corrugated board facing has no bias because the value can be defined only in terms of a test method.
13. Keywords
13.1 coating; corrugated; impregnating; wax
