A-A-1200A
Sampling for tests. A random sample of sheets shall be selected from each lot in accordance with MIL-STD-105 special inspection level S-2, the AQL for waterproof testing shall be 2.5 expressed in terms of percent defective. Lot acceptance or rejection for breaking strength shall be based on the average value obtained of the samples tested. The sample unit shall be one sheet.
Frequency of testing. Unless otherwise specified, each bulk roll of coated abrasive product shall be tested for conformance with the abrasive grading and coated product breaking strength requirements specified in this commercial item description. If the end-item product (sheets) cannot be directly traced to the bulk roll by lot or batch number marking applied by the manufacture or by objective documented evidence~ then specimens shall be selected from each lot as defined above and tested in accordance with the specified test methods.
Certification of grading, breaking strength and waterproof testing. When specified in the contract or purchase order, a certificate of conformance may be furnished in lieu of actual testing on a lot by lot basis providing that each of following conditions exist:
(1) Objective evidence dated not more than one (1) year prior to the date of the start of the contract as described in the solicitation or date of the purchase order as applicable shall be available.
(2) Test specified in this document and the industry standards referenced herein have been performed by an independent test facility acceptable to the Government.
(3) That the product being offered is the same type and grade of abrasive and backing material and has been manufactured using the same material, processes and manufacturing techniques as the product tested.
Examination for preparation for delivery. A random sample of unit, intermediate and shipping containers (as applicable) shall be selected from each lot and examined for conformance with the preservation, packaging, packing, labeling, and marking required in the contract or order. Samples shall be selected in accordance with MIL-STD-105, special inspection level S-4, AQL 4.0 expressed in terms of percent defective.
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