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1 related to the environment
2 free from bacteria or other living microorganisms; totally clean
3 to reduce
4 the action or process of collecting someone or something
5 These are _____ used in a lab.
6 a person who conducts analysis
7 the action or method of storing something for future use
8 the state of having no protection from something harmful
9 What's this ? (plural)
10 a substance or mixture for use in chemical analysis or other reactions
11 _____ levels can contribute to sample contamination
12 a polluting or poisonous substance
13 an object for holding or transporting something
14 ______ contamination occurs when bacteria or other microorganisms are unintentionally transferred from one substance or object to another, with harmful effect
15 not sealed.
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