49948
Since the definition of the equivalence factor depends on context ( which reaction is being studied ) , IUPAC and NIST discourage the use of normality .
 IUPAC, NIST
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 IUPAC, NIST