Stanislav Jaracz,Ravi Subramanyam,Michael Prencipe
申请号：
US14580510
公开号：
US09435745B2
申请日:
2014.12.23
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A method of measuring the relative rates of release of a target metal ion from two or more samples includes: (i) providing at least two aliquots of a solution including an indicator, the indicator having a color； (ii) dispersing a sample into each aliquot； and (iii) during step (ii), monitoring the color of the indicator in situ to determine the rates of release of the target metal ions from the samples relative to one another. Each sample includes at least one source of the target metal ion. The indicator contains zincon. The samples are oral care compositions selected from a toothpaste, a tooth gel, and a tooth powder. The target metal ion is selected from the stannous and zinc (II).
