RT Journal Article SR Electronic T1 The Effect of Formulation of Parenteral Solutions on Microbial Growth—Measurement of D- and Z-values JF PDA Journal of Pharmaceutical Science and Technology JO PDA J Pharm Sci Technol FD Parenteral Drug Association (PDA) SP 32 OP 41 VO 49 IS 1 A1 Berger, Thomas J. A1 Nelson, Patricia A. YR 1995 UL http://journal.pda.org/content/49/1/32.abstract AB In order to assess the sterilization conditions for parenteral solutions, the microbial inactivation kinetics of steam resistant spores of Clostridium sporogenes were evaluated. The D-value or death rate kinetics as well as z-values were obtained for several formulation categories of solutions employing a miniature steam retort. Amino acid and heparin solutions provided appreciable microbial resistance as demonstrated by resulting high D- and low z-values. The addition of electrolytes to carbohydrate solutions resulted in increased microbial resistance compared to carbohydrate solutions without electrolytes. A categorization of solutions and their potential impact on microbial thermal resistance will be presented