Ultrapure is proud to announce the introduction to the North America market, a exciting proved system. Available in a variety of configurations to cover flow requirements from 0.5 to 450 GPM with salinity levels up to 3000 ppm of TDS. Using an innovative modular design, Culligan Ultrapure is able to offer the highest quality construction and speedy delivery times at very competitive pricing. Low-pressure membrane technology can remove over 99% of contaminants such as dissolved minerals, bacteria, and other impurities; producing water suitable for high-purity applications like boiler feed and ingredient water for food and beverage production.

Would you like more information on the new Culligan IW Reverse Osmosis syste, simply click here. Permanent and temporary systems, membranes, profiling & normalization, cleaning, maintenance, chemicals, temporary services. Systems sized from customer's capacity requirements. Turnkey engineering and water treatment systems where reverse osmosis works with water softening, filtration, deionization,  ultraviolet and more.



Additional Information 
All New Culligan IW RO

Culligan is proud to announce this exciting new product lineup, click here for more details.

RO Systems

SUEZ Product Library

The Culligan E2 Series RO - The E2 Reverse Osmosis System is an economical water treatment solution, which reduces operating and post treatment costs. 

M1 Series RO - The M1 Reverse Osmosis System is a cost effective water treatment solution with enhanced features, which help reduce operating and post treatment costs.

M2 Series RO - The M2 Reverse Osmosis system is a flexible, expandable configuration customized to help meet your most demanding and exacting consumption needs. Manage the reverse osmosis system using an easy-to-reach electronic controller that automates when to get the quantity and quality of water based on your specific requirements.

G1 Series RO - When you install a G1 Reverse Osmosis system, you combine cost-effective system configuration, cost-minimizing operations, and reduced post-treatment costs. 

G2 Series RO - Culligan makes it simple to manage your water for drinking and industrial processes. The G2 Reverse Osmosis system is a flexible, expandable configuration customized to help meet your most demanding and exacting consumption needs. 

G3 Series RO - No limits for your water quality regardless of quantity—the Culligan G3 Reverse Osmosis system processes water to help meet your most demanding and exacting industrial requirements. The durable reverse osmosis membrane processes large volumes while reducing water waste; you can manage the system using a touch panel electronic controller. 

GE E4 Series RO -  GE's E-series RO machines are designed for durable operation, high quality product water production, easy installation and straightforward control. The E4-LE RO Series has slightly different specifications, operating parameters and materials of construction.

SUEZ Industrial Series RO - Industrial High Pressure Brackish Water RO Elements

SUEZ ROED Brochure

GE Reverse OsmosisGE Reverse Osmosis


Culligan Reverse Osmosis System Application

A major beverage plant was looking to reduce the impact of its operations on the environment while meeting the water treatment challenges at its facility. The sustainability goals of the facility included reducing water usage and energy costs associated with its operations. Read the details about Culligan Matrix Solutions' sustainable approach.

GE’s Reverse Osmosis System Helps Unilever Reduce Water, Natural Gas Consumption and Chemical Usage 

In the face of rising and unpredictable energy prices, the ongoing campaign to improve energy efficiency is necessary for the Unilever plant in Rexdale, Ontario to remain competitive. The Rexdale plant consumes huge quantities of energy for the annual production of 185 million pounds of margarine and other vegetable-oil products, and energy expenditures represent 15% of all production costs. The RO system not only softens and purifies municipal water, but it also re-uses process water captured throughout the plant for use as boiler make-up, significantly reducing the consumption of municipal water. Read about the success story here

For a more detailed description of the GE products we work with please view the GE Product Catalog.

Questions to ask yourself
  1. What quality of water is required?

  2. Resistivity, conductivity, PPM, TDS, Particulates, Plate Count, Ohms, Mhos, microsiemens, etc.  All quality issues must be known.

  3. Is there a Bacteria Spec?

  4. Is there a TOC Spec?

  5. Is there an endotoxin Spec?

  6. Is there a TDS Spec?

  7. Is there an ohm’s resistivity spec? Or conductivity?

  8. If you want “just PEDI mixed bed water” what does that mean specifically in quality?  18Meg? 10 Meg? 200K? Etc.  What is the minimum/maximum resistivity, conductivity, (see all above points)

  9. Is the application batch or continuous or sporadic?

  10. If batch, how much per batch? How many batches per day/week/month?

  11. If continuous, is this 8 hpd/24/7/365 or sporadic?

  12. How many points of use are there?  Are there different qualities needed at each point? Is recirculation needed at one or more points to keep the quality up?

  13. Is an RO storage tank necessary?

  14. How critical is it if the RO goes down?  Is redundancy needed or extra pumps?

  15. Future expansion?  Piping issues, space issues, cement pad issues, pre-treatment issues, and storage issues?

  16. If so, what size, and where is it put? (before PEDI or after?)

  17. How about bacteria issues in the storage tank?  This begs recirculation and UV issues?

  18. Repressurization pump after RO storage.  Need flow rate of product water to batch, size of piping to batch, length of piping and quality of piping.

  19. Minimum – maximum flows, channeling, peaks, continuous.  All necessary discussions.  Possible recirculation for proper flows.

  20. Is the RO gpm need based on what?  77° or 60°, or 55° or 52° - or how is this determined?

  21. What is incoming water pressure?  Will there need to be a pre-booster pump?

  22. Has an SDI test been done on site?  This is critical for membrane fouling issues and operational issues including flux rate and proper RO sizing.

  23. Has there been osmotic back pressure discussions?

  24. Is CO2 an issue – as membranes won’t remove CO2 and DI’s may exhaust prematurely.

  25. PEDI questions – 9” vs. 12” vs. 14” vs. dual bed SB, pre-treatment vs. in-series PEDI MB.

  26. Monitoring water at all points – is there a system to shut equipment down when quality drops below spec?

  27. Has EDI been brought up?

  28. Are there auto-DI discussions?    Neutralization, chart graphing, MPCA issues, separation, recirculation, quality control.

  29. Space requirements for total system VS what is available?  This includes floor footprint, height, doors, docks, stairs, piping in the way, hoists, lifts.

  30. Power and drain requirements? For all components.

  31. Pretreatment needs – Depth filters, softeners, iron filters, carbons, 10 micron, UV, feeders.

  32. Are we truly the sole source?

  33. Spare Parts?

  34. How long will membranes last?  At what % rejection will they need to be replaced / cleaned?

  35. Clean in place skid – is it required?

  36. These are only some of the questions to ask depending on the application.  We could write down 35 more for other apps.


  • Food and Beverage
  • Boiler and Deionization System Pre-Treatment
  • Ice Production and Drinking Water        
  • Resturant and Grocery Stores
  • Water Jet Cutting
  • Steam Production and Humidification

    and many more!

CAAD Drawings
RO Feed Spec

Membrane System Feed Specifications

Typical RO and NF feed water requirements:

SDI(15): < 5.0 better < 3
Chlorine (free): < 0.01 ppm (PA)
Iron: < 0.1 ppm
Turbidity: < 1.0 NTU better < 0.2
TOC: < 3 ppm
Silica: < 40 ppm (without antiscalant)


Membrane Cleaning

Membrane Chemical Offering

reverse osmosis membrane cleaning

Silt Density Index Matters

The SDI or silt density index is a measure for the fouling capacity of water in reverse osmosis systems. The test measure the rate at with a 0.45-micrometre filter is plugged when subjected to a constant water pressure of 206.8 kPa (30psi). 

Did you know that qualitatively, SDI is proportional to particulates and junk going through your membrane elements. A less efficient system costs you money! Save money with ROsave. Patented GE technology on depth filtration media engineered specifically for the highest degree of protection. This product offers low-pressure drop, high particle/dirt capacity which combines to deliver long life and the optimum protection of high performance membrane elements. 

Silt Density Index Matters 

Membrane Layers

Spiral Element

Membrane layers spiral element

What is Your Source Water


Typical Properties of Source Waters

 Source Turbidity NTU Color  TOC TDS SDI
River High, with seasonal variation Moderate Moderate to High Low  > 5
Lake/Pond Low, with seasonal variation High, with seasonal variation High Low  > 5
Well Low Low Moderate Low to high  < 5
Municipal Low to moderate Low Low to moderate Low to moderate  > 5 or < 5
Brackish Low Low Low to moderate Moderate to high  > 5
Seawater Low to moderate Low Low High  > 5

Definition of Characterization

Parameter/Values Low Moderate High
Turbidity -NTU 1-10 10-25 >25
Color -PtCO <10 15-30 >30
TOC -ppm <1 2-10 >10
TDS -ppm 10-150 150-2500 >2500 - Brackish

What is your source water? pdf

RO Pretreatment Options
Reverse Osmosis Pretreatment Options
 Water Source Critical Water Parameter Suggested Treatment Equipment
River NTU > 25* Clarifier* + MMF or UF/MF
  NTU 10-25 MFF or UF or MF with Coagulant
  NTU < 10 MMF or UF or MF (Coagulant may be needed)
Surface water lake Hard water and TOC Lime softener + Clarifier MMF
  NTU > 25* Clarifier* + MMF or UF/MF
  NTU < 25 MMF or UF/MF
Well Water Iron and manganese Chlorination + MMF / Greensand Filter
  NTU < 10 MMF or UF/MF
Brackish Water NTU > 10 MMF
  NTU < 10 UF/MF or MMF
Sea or Ocean NTU > 50 Clarifier* + MMF
  NTU < 50 UF or MF - Check with MF suplier
  NTU < 25 UF/MF

TOC=Organics, MF= Micro filtration, UF=Ultrafiltration, MMF= Multimedia Filters

*Total suspended solids greater than 100mg/L require clarification

Pretreatment Options

Water Temperature

Effects of Water Temperature

High Temperature (25-30 C)

  • Design For Lower Pressure = Smaller Pump
  • Warm water has lower viscosity

Lower Temperature (<20 C)

  • Design For Higher Pressure
  • Large Pump
  • LE Elements (CW Option)
  • Cold water has higher viscosity

Does your water temperature change +/- 10 C or more?

Adjust pressure to maintain consistent permeate Flow Variable Frequency Drive (VFD).

Effects of water temperature

Dissolved Ions
Dissolved Ions that Form Scale
  Foulant / Scale Pretreatment and Cleaning
 Calcium Carbonate Control with pH reduction and/or anti-scalant. Easy to clean
Calcium Sulfate Control with anti-scalant. Difficult to clean.
Barium Sulfate Control with anti-scalant. Impossible to clean.
Strontium Sulfate Control with anti-scalant. Difficult to clean. Not Common.
Calcium Phosphate Control with anti-scalant and pH reduction. Easy to clean.
Iron Assuming No Oxidation (Air, CI2). Control with anti-scalant. Easy to clean.
Manganese Assuming No Oxidation (Air, CI2). Control with anti-scalant. Easy to clean. 
Aluminum Control with pH reduction and anti-scalant. Easy to clean (not Aluminum Silicate).
Silica Assuming no colloidal silica. Control with anti-scalant. Adjust the pH up or down can help. Impossible to clean.

Dissolved Ions that form scale pdf

Feed Water Guidelines
RO Feed Water Quality Guideline
Parameter Typical Limits
Turbidity Prefer < 0.2 NTU, 1.0 Max
SDI15 Prefer < 3, Up to 5 accepted
Iron < 0.05 ppm
Manganese < 0.05 ppm
Aluminum < 0.1 ppm
TOC < 3 ppm
Silica < 40 ppm
pH TFC (5.0 - 9.0)
Temperature 55-85F (12.7 - 30C)
LSI Run anti-scalant program
Barium Run anti-scalant program
Strontium Run anti-scalant program
Phosphate Run anti-scalant program

Feed Water Guideline pdf

Influent Quality