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A condenser microphone was placed at the top of the air exhaust on a PMA - 10 high - shear granulator to collect AAEs for a design of experiment ( DOE ) varying impeller speed , total binder volume and spray rate .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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