Abstract: Unique methods for preparing and producing non-toxic, liquid customized preservative substance formulations that may be used as embalming, sterilizing, disinfectant, preservative, mold destroying and fungus extermination solutions. These substances can: (a) safely resist or retard natural destructive processes; (b) save or keep things from decaying, decomposition, deterioration, spoiling, putrefication or fermentation; (c) continually prevent or inhibit unwanted microbial growth; and, (d) be used as embalming medical devices to significantly retard the carious destructive processes of nature with anti-microbial properties. These formulations forestall, prevent and inhibit undesirable chemical/biological changes, microbial/bacterial actions, plus retard decomposition or other negative changes. The formulations are comprised of ultra-fine minute nano-sized colloidal silver particles in pure distilled water resulting in stable suspended preparations.