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I agree with the comments that refer to a general compendial reference versus a single compendial reference. All official compendia should be considered to be included in the Standard by reference. We also believe that some of the specific limits identified in the issue paper may be justifiably modified, and that should be left up to the individual companies or Third Party Testing Laboratories as long as they can justify amending the specific limit.

Change the language to include a general statement concerning compendial references and include language that allows the changing of the specific limits, if justifiable.

Dear Mr. Bradley: Thank you for your comments on the Joint Committee ballot of Standard 173 (173i29) regarding the quality assurance for quantitative test methods. Attached are your comments on this issue and the response of the issue proponent, Kerri LeVanseler of NSF International. I hope the above addresses your concerns. Thank you for your comments. If you have additional comments, or wish to discuss these points further, please contact Ms. LeVanseler.