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Manufacturers' claims, even ours, are always biased. So called technical evaluations and "government reports" are advertisements with data always slanted to suit the advertiser. Many will have questionable, at best, circumstances of evaluation, such as no control over how samples were collected. We understand that one manufacturer collected his own samples and sent them, mixed with water, to the test lab! No matter how accurate the lab test, it is worthless without impartial sample collection.
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