Chen Jua
2014
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Journal
Journal of Huaihai Institute of Technology
Abstract
The concentration variation of disodium edetate titrating solution,which is commonly used in laboratories,was evaluated to determine its expiry period under storage and common use conditions.Relative deviation of zero-to-five-month sample concentration was evaluated through concentration titration,and the expiry period of the solution was determined to be three months.This experiment provides an accurate and reliable validation method for expiry period of titrating solution which can satisfy experiment requirements.