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MetastableScreenshot 

 

Metastables V 1.0 is a freeware program that accepts a mean mass value of a metastable ion (M*) and an exact value or estimate of the molecular ion (M+) and returns one or more possible combinations of ion-pairs that satify the equation: M* = (M2*M2)/M1 where where M1 and M2 are whole numbers with an error-tolerance of 0.1 dalton.

Screenshot of Metastable