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Table 1 USP Standards to purified water and water for injection (WFI)

From: Chemical resistance of the gram-negative bacteria to different sanitizers in a water purification system

  Purified Water WFI
Conductivity < 1.3 μS/cm (25°C) < 1.3 μS/cm (25°C)
Total Organic Concentration < 0.5 ppm < 0.5 ppm
Bacteria 100 CFU/mL 10 CFU/mL
Endotoxin Non specified < 0.25 EU/mL