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The subject test method isASTM A90 Standard Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings, a copy of which will be provided to you solely for the purpose of this tutorial and which must be returned with your completed assignment. You are the Chief Chemist of a quality control laboratory serving a metal fabrication factory producing, amongst other things, hot-dip zinc-coated steel sheeting. Up till now, you have not been required to test the zinc-coated steel sheeting being produced but now, for the first time, one of your important customers is asking that their batches be tested and the zinc coating weight be reported. You know that ASTM ASO is a technically valid test method for this purpose, but you are concerned that it is far too comprehensive and complicated for routine use by your laboratory staff. Your task is to re-write this standard test method in a form that would be suitable as a routine working test method in your laboratory. In doing so, keep in mind that: a) You are only concerned with zinc-coated steel sheet, not wire or other articles. b) The customer does not require you to test each side of the sheet separately; just determine the total amount of zinc on the both sides of the sheet. c) You will be reporting the results in metric (SI) units. d) You have a laboratory guillotine capable of cutting specimens to the desired dimensions, and all the necessary measuring and test equipment required by the method. e) Your method should be as self-contained as practicable, providing step by step instructions to staff on how to prepare the specimens, undertake the test, and record and report the results. As this is a laboratory document, your procedure should also include appropriate documentation identification and control as expected by ISO 17025. Please note – For the purposes of this tutorial, you will not need to refer to ASTM A653 or any of the other ASTM standards cited in the standard test method provided.
Make sure this order include: [Background about the Zinc, Purpose, Scope, Related references, Equipment’s required, reagents, Health and safety considerations, Procedure, Calculation, Reports] I will upload one example just to follow the instruction.


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