PSI specializes in formulation, production, and documentation of products of the highest quality, performance and biological suitability. Formulation depends upon an extensive understanding of the product attributes and the relationship of the product to the biological system.

The primary question has to be “How do you create the desired effect without producing deleterious secondary effects?”

Some of the considerations are:

PSI’s personnel stand ready to help you choose the appropriate preservatives for your solutions and document their effectiveness (lethality).