In hospital settings, ultrapure water plays a critical role in various areas, including medical equipment operation (hemodialysis machines, cleaning equipment in sterilization supply centers, imaging equipment), testing and analysis (biochemical analysis, microbial culture), and formulation production (large-volume parenteral solutions, topical formulations). Hospitals have extremely stringent quality requirements for ultrapure water, which must typically comply with relevant pharmacopoeia standards (such as the Chinese Pharmacopoeia) and industry regulations (microbial indicators, endotoxin indicators, chemical indicators).
Raw Water → Raw Water Pressure Pump → Multimedia Filter → Activated Carbon Filter → Water Softener → Precision Filter → Primary RO → pH Adjustment → Intermediate Water Tank → Secondary RO → Intermediate Water Tank → Intermediate Water Pump → EDI System → Purified Water Tank → Pure Water Pump → UV Sterilizer → Microporous Filter →Pasteurization → Water Point
Indicator Type |
Specific Indicator |
Control Requirement |
Purpose |
Microbial Indicator |
Total microbial colony count per 100 mL |
≤1 CFU/100mL |
Prevent contamination of medical equipment, drugs, and test samples |
Endotoxin Indicator |
Endotoxin content |
≤0.25 EU/mL (Stricter requirements for ultrapure water used in injection production and hemodialysis) |
Ensure medical safety and avoid adverse reactions |
Chemical Indicator |
Conductivity at 25°C |
≤1.3 μS/cm |
Reflect the content of ionic impurities |
Total Organic Carbon (TOC) |
≤500 ppb |
Avoid organic matter interfering with medical processes |