Time and temperature-dependent enzymatic indicator

摘要

A time and temperature dependent enzymatic indicator with discontinuable indication comprises a plastic envelope container enclosing an enzyme, an enzymatic substrate and a pH-indicator as active components, the indication being discontinuable in that the enzyme is bound to a carrier and in that the plastic envelope is sealable for dividing the container into two compartments, one of which is free from enzyme and thus cannot provide further indication.