30310
The experiment was performed to cover the study of the variables influencing the extraction process and its optimal conditions ( sample mass , particle size , acid concentration , sonication time and ultrasound power ) ; the determination of these analytical characteristics and method validation using certified reference material ; and the analysis of pre - starter diets .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None