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Chemical Tag Design parameters
• TTI - time-temperature integrating tag
– Chemistry of reaction in tag must follow food
or drug kinetics
– Rate of degradation as f(T)
• Arrhenius function
• Similar E a or Q 10
k = k o
e
−E a
RT
lnk = ln k o
− E a
RT
or lnτ = τ r
− bT