Central Sterile Water Systems for AAMI TIR34 / AAMI ST108

The Central Sterile Water Systems are designed to meet or exceed the proposed standards

What is AAMI ST108?

AAMI Standard 108 will not allow for direct feed systems in central sterile processing any longer, and thank goodness! The loop velocity of 3-5 feet per second being recirculated continuously through a 0.2 final filter will ensure that the last water that touches surgical instruments is free of bacteria and endotoxins. This means less surgical site infections!!

The technical information report 34 (TIR34) will convert to Standard ST108 and covers the selection and maintenance of effective water quality suitable for reprocessing medical devices in central sterile water facilities. It provides guidelines for selecting the water quality necessary for the reprocessing of categories of medical devices and addresses water treatment equipment, water distribution and storage, quality control procedures for monitoring water quality, strategies for bacterial control, and environmental and personnel considerations.

Water can be treated by a variety of methods that yield different levels of water quality. In general, as the chemical quality of water improves, its microbial content could increase unless the system is closely monitored to prevent microbial overgrowth. Gram-negative bacteria and nontuberculous mycobacteria can grow in any type of water, including tap, softened, deionized (DI), reverse osmosis (RO) treated, and distilled water. The rate of growth and the microbial levels attained are a function of the amount of organic contaminants in the water. The importance of monitoring water quality to prevent problems with microbial overgrowth cannot be overemphasized.

The AAMI ST108/TIR34 Central Sterile Water Systems are designed to meet or exceed the proposed standards put forth. The improved process water used in Water Systems lowers infection, protects equipment and improves patient outcomes.

Central Sterile Water Systems for AAMI TIR34

What will TIR34, ST108 require?


The best practice design provides for larger flow RO with a smaller fresh storage for your Critical Water Delivery System.  The design is compliant with AAMI TIR34 and brass/copper/lead free with rust free powder coated aluminum frame.  Our deluxe controller with conductivity and optional facilities management communications package make it the most advanced solution on the market.

  • RO as pretreatment for DI pays for itself quickly
  • Less water waste with 40-75% recovery
  • Dedicated 115 Volt 20 amp circuit required
  • Minimal system floor space requirements
  • Optional Integrated Pretreatment Injection allows for smaller footprint and less maintenance (Chlorine Destruct/Antiscalent)
  • Ease hose Connection setup in minutes
  • Stainless Steel GRUNDFOS multi-stage RO Pump with integrated SS re-circulation pump for up to 30 GPM@40 PSI for re-circulation at 3 FPS


AAMI TIR34/ST108 Clean Water Standards Prevents:

  • Device breakage do to corrosion of a surgical instrument
  • Toxic effects due to residual endotoxins in the central sterile water supply
  • Patient infection caused by micro-biologicals in rinse water
  • Ineffective detergent performance due to contaminants binding to detergent surfaces

Design Specifications for Central Sterile Water Systems for AAMI TIR34

Design Specifications for Central Sterile Water Systems
Compact Central Sterile Water System

Complete systems are designed to feed your reprocessing requirements.

Footprint for Central Sterile System

Footprint for Central Sterile System