7.6.2 When 20 or more specific analyses are performed each day, a counting standard and a background sample should be ... of a high school diploma or its equivalent, plus at least 2 weeks of specialized training in standards and sample anbsp;...
Title | : | Manual for the certification of laboratories analyzing drinking water |
Author | : | Drinking Water Laboratory Certification Implementation Work Group (U.S.), United States. Office of Drinking Water |
Publisher | : | - 1982 |
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