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Protegra CS™ systems from Siemens Water Technologies produce ASTM type II (pure) water for many of today's modern laboratory, healthcare and industrial applications.

Whether you're looking for steady and reliable water for your clinical or analytical laboratories, or have a quality control, pharmaceutical, or cosmetic lab that requires type II water at flow rates of 120 - 750 liters per hour, you can rely on water produced by the new Protegra CS™ system. Our systems combine reverse osmosis (RO) and continuous electro-deionization (CEDI) technology to produce highly consistent quality water.

The Protegra CS systems can produce up to 18,000 liters a day of high quality pure water across several markets or industries.  Water produced by the Protegra CS™ can be used in many applications, including:
- Manufacturing chemicals and biochemical reagents
- Supplying water to laboratory equipment
  -- Clinical analyzers
  -- Glassware washers
  -- Stability chambers
  -- Autoclaves
  -- Point-of-use sink faucets
  -- Environmental chambers
- Pretreatment to Ultra pure (type I) water systems

CEDI Technology
Protegra CS systems have within the cabinet, a CEDI module that consists of ion exchange resins used in single beds for enhanced water purification.

Microbiological analysis of product water shows a high decrease in proliferation of bacteria due to the high pH swing between the two cells and direct contact of resin and electrodes.  Furthermore, an intermediate pH shift has a positive effect on the separation of SiO₂ (Silicon Dioxide) and CO₂ (Carbon Dioxide).  We also see a remarkable reduction in the number of bacteria with high colony forming unit (CFU) counts from the feed water, as electrodes in the water make it unsuitable for bacteria to live.

CEDI's Clear Advantage is Continuous Operation
CEDI Technology is designed to have the module continually regenerate itself, without any acids or alkalis.  This technology is a cost effective way to ensure pure water when you need it and also benefits the environment because of less required consumables.  With the combined RO membranes and the CEDI module's long life, our Protegra CS™ system has minimal down time, which means less process interruptions for you.