Ultrapure is a leading provider of water treatment products and services for the laboratory market. We offer a wide range of water purification systems including central systems, pretreatment and point of use ultrapure water polishing systems.

Ultrapure custom laboratory systems can provide you with reverse osmosis, UV pretreatment plus a Type I Analytical Grade DI System to provide you with ASTM reagent grade water and other ultra high purity lab water needs. We also offer a wide range of deionization cartridges that are compatible with systems such as Aries, Barnstead, Elga, Millipore and Siemens.

The selection of a proper ultrapure water system for your laboratory will depend on several parameters. Ultrapure engineers are available to discuss with you all these parameters and to help you to design the laboratory water system for your needs.

Multi-pass UV system provides sterilization of the flow path as well as the dispensing port.

TOC UV destruction unit reduces the total organic carbon content of the product water.

Submicron filtration removes bacteria and viruses.

Ion-exchange technology features high purity, low TOC demineralization resins.

Anatel and Myron-L quality monitoring

Additional Information 
Aries Product Details

ARIES High Purity Water System - provides up to 4.0 liters per minute of 18.2 megohm water. A quiet recirculation pump ensures constant water purity. Standard equipment includes a built in pressure regulator and a 0.2 micron final filter to remove bacteria. Read more about Aries High Purity Water System.

ARIES GEMINI-Series - The GEMINI Ultra High Purity Water System provides up to 3.7 liters per minute of 18.2 megohm, 0.2 micron filtered water. The Multi-Pass Ultraviolet system irradiates the water at three separate passes in the recirculation loop. The dispensing port is continuously exposed to UV for complete sterility at the outlet. Learn more about the GEMINI Series.

ARIES GEMINI-MB - The GEMINI-MB Ultra High Purity Water System provides up to 3.7 liters per minute of 18.2megohm, 0.2 micron filtered water. The Multi-Pass Ultraviolet system irradiates the water at three separate passes in the recirculation loop. The dispensing port is continuously exposed to UV for complete sterility at the outlet. Learn more about the GEMINI-MB.

Please click here to view the ARIES GEMINI products price guide. 

Elga Product Details

Elga CENTRA - product family includes a Centralized Recirculating Distribution System and Centralized Purification and Distribution Systems (first purifies and then distributes the purified water). All built in purification technologies are controlled by a central processor with audio-visual alarm warnings, an internal leak detection alarm and connection to building management systems. Prior to installation a dedicated team of ELGA project engineers will work with you to develop a designed engineered solution and for complete peace of mind, every ELGA product is backed by a global service structure, ensuring your system remains cost effective and delivers pure water during its entire life time. Learn more about the Elga CENTRA Series.

Elga Medica Series- The systems are designed to provide water to clinical analyzers specified to Clinical Laboratory Reagent Water (CLRW) standard (formally Clinical Laboratory Standards Institute Type 1). Whether you have access to tap or partially purified water, or need to feed analyzers on a small or large scale, ELGA has the system for you. Learn more about the Elga Medica Series.

Elga PURELAB Chorus - gives you the choice to configure a solution that best suits your needs with the added benefit of flexibility should your future needs change. PURELAB Chorus 1 – for your ultrapure Type I+ /I solutions. PURELAB chorus 2 - for your pure Type II solutions. PURELAB Chorus 3 – for your general grade Type III solutions. Learn more about the Elga PURELAB Chorus Series.

Elga PURELAB Ultra - PureSure system provides the ultimate inorganic purity (guaranteeing the retention of silcon and boron species). Constant real-time Total Organic Carbon (TOC) monitoring gives you peace of mind by letting you know what is happening with organic purity as you dispense your water sample. Learn more about Elga PURELAB Ultra.

Elga PURELAB Flex - The PURELAB flex is designed to deliver accuracy, flexibility and ease of use. This award winning system provides perfect water purity for analytical and life science applications which require RO Type III water up to ultrapure type I (18.2 MΩ-cm) water. It allows focus on routine test work without concern about the water quality affecting test results. Learn more about Elga PURELAB Flex.

Elga PURELAB Classic - An ideal choice for the lab requiring more than 20 liters/day of Type I ultrapure water. Adjustable dispensing provides a flow rate of up to 2.0 liters/min and continuous water quality monitoring. Learn more about Elga PURELAB Classic.


Grades of Water Chart

Are You Using the Right Quality of Water? 

Different levels of quality are required for a vast range of applications, therefore different grades of water must be purified and utilized to match the required procedures or appliances.

Grade of Water Resistivity (M-cm) TOC (ppb) *Bacteria(CFU/ml) **Endo-toxin (EU/ml) Typical Applications
Type 1+ 18.2 < 5 <1 < 0.03 GF-AAS, ICP-MS, trace metal detection
Type 1 > 18 < 10 < 10 < 0.03 High Performance Liquid Chromatography (HPLC), GC, AAS, Immunocytochemistry, mammalian cell culture, plant tissue culture
Type 2+ > 10 < 50 < 10 NA General laboratory applications requiring higher inorganic purity
Type 2 > 1 < 50 < 100 NA Feed to ultra pure type 1 systems, feed to clinical analyzers, electrochemistry, sample dilution, media preparation, radioimmunoassay
Type 3  > 0.05 < 200 < 1000 NA Feed to ultra pure water type 1 systems, feed to washing machines, dishwashers, autoclaves

Grades of Water pdf

CAP Water Quality Standards

College of American Pathologists Water Quality Standards

  Type I Type II Type III

Resistivity Ω.cm @ 25 °C)

a. In-line

b. Effluent (as used)










Silicate (mg/I at SiO2) 0.05 0.1 1.0
pH N/A N/A 5.0-8.0
Microbiological Content 10 1000 N/A

Particulate matter - Type I water should be free of particles (< 500 particles/litre) greater than 0.2µm.

Suggested water quality uses: 

Type I: Tissues or cell culture, ultra-micro analysis, critical analytical procedures, standard preparations

Type II: Most routine laboratory methods, immunology, hematology and other areas. 

CAP Water Quality Standards pdf

NCCLS Water Quality Standards

National Committee for Clinical Laboratory Standards (NCCLS) 

  Type I Type II Type III
Bacteria (CFU/ml) < 10 > 1000 N/A
pH N/A N/A 5.0-8.0

Resistivity Ω.cm @ 25 °C)

> 10

> 1

> 0.1

SiO (mg/I) < 0.05 < 0.1 < 1
Total Solids (mg/l) 0.1 1 5
Total Oxidisable Organic Carbon <ml/I) < 0.05 < 0.2 < 1

Type 1 water must be free of particulate matter larger than 0.2µm. *Resistivity of Type 1 must be measured in-line. 

Type I: Test methods requiring minimal interference and maximum precision and accuracy, ie. atomic absorption and flame emission spectometry, enzymatic procedures sensitive to trace metals, electro-phoretic procedures, high sensitivity chromatographic procedures, butter solutions, preparation of standard solutions. 

Type II: General laboratory testing other than above and glass washing. 

Type III: Glassware washing, preliminary rinsing of glassware and feed water for producing higher grade water. 

NCCLS Standards pdf

ASTM Water Quality Standards

American Society for Testing and Materials (ASTM) 

Standard Specification for Reagent Grade Water

  Type I Type II Type III Type IV 
Electrical Conductivity Max (µS/cm @ 25°C) 0.056 1.0 0.25 5.0
Electrical Resistivity Min. (MΩ-cm @ 25°C) 18.0 1.0 4.0 0.2

pH @ 25°C




TOC max.  µg/l 100 50 200 no limit
Sodium Max µg/l 1 5 10 50
Silica max. µg/l 3 3 500 no limit
Chloride max. µg/l 1 5 10 50

*Requires the use of a 0.2µm membrane filter
**Prepared by distillation
***Requires the use of a 0.45µm membrane filter.

When bacterial levels need to be controlled, reagent grade types should be further classified as follows:

  Type A Type B Type C
Total Bacteria Count max. 1 10 1000
Endotoxin max. EU/ml 0.03 0.25 -