Exemplifying production tests of a hydrogen sulfide purification absorber and laboratory tests of rings which simulate the case of underwater vehicles, the authors optimized calculation and analyzed the diagnostic value of heterogeneous materials related to the resource of the acoustic emission strength, which resulted from the acoustic emission micromechanical model. Considering metrological aspects of this definition, the researchers used the diagnostic value of the acoustic emission time dependence parameters and their statistical distributions. The paper shows the relationship between diagnostic parameters and the resource, the optimized calculation of the diagnostic parameter by selecting an informative acoustic emission primary parameter. This optimization is used in the information form. The paper presents the resistance of the considered diagnostic parameters to destabilizing factors.