Optimized, Cost-Effective nPB replacement: Vertrel™ and Opteon™ Why are Vertrel™ and Opteon™ fluids suitable as a nPB replacement ? Recently, the National Toxicity Program issued a report, dated August 2011, “Toxicology and Carcinogenesis Studies of 1-Bromopropane in F344/N Rats and B6C3F1 Mice (Inhalation studies).” https://ntp.niehs.nih.gov/ntp/htdocs/LT_rpts/TR564.pdf. The report concluded that there was “clear evidence of carcinogenic […]