800-460-9011 toll free USA and Canada
818-786-0600 local and international
818-786-2347 Fax
Government Purchase Cards Welcome

Our Products

Sediment Filters

Carbon Filters

Water Softeners

Reverse Osmosis Systems

Reverse Osmosis

Storage Tanks

Iron Filters

Multi-Media Filters

Deionization Systems

Ultraviolet Sterilizers

Bacteria filter

Ultra filters

Ion-exchange Resins

Filter Media

Custom filtration products

Water Testing Supplies

Click here for more technical info


Why not tap water?

Tap water has far too many contaminants to be used in laboratories or for scientific purposes.  Impurities, elements and compounds in amounts as small as one part per trillion, can influence results in many research experiments.  Heavy metals and dissolved organics, commonly found in tap water, are particularly damaging to life science research.  Some scientific applications such  as High Performance Liquid Chromatography (HPLC) use detector base lines for calibration, and these require ultra pure water completely free of any impurities so that the results are the same in every situation.  The water must especially be free of any elements that are being measured.
Because water purity is so important, several professional organizations have  established water quality standards.  Some of these influential groups are the American Chemical Society (ACS), the American Society for Testing and Materials (ASTM), US Pharmacopeia (USP), and the National Committee for Clinical Laboratory Standards (NCCLS).  NCCLS specifies three types of water--I, II, and III--and water intended for Special Purpose use.

What are contaminants?

Special Products

Replacement Filters

Millipore systems

Barnstead systems


Lab Water Systems

Millipore Brand

Barnstead Brand

Labconco Brand

Other Filters

Hose Barb Filters

Inline Filters

Contaminant is any substances you do not want in your water.  These are also called impurities.  Some common contaminants found in water are particulates, dissolved inorganic (solids and gases), dissolved organics, microorganisms, DNA, RNASE and pyrogens.

How can I get rid of contaminants?

There are a number of different ways to decontaminate (or purify) water. coarse filtration  activated carbon filtration , reverse osmosis, Deionizationorganic adsorption, microporous filtration, ultrafiltration, ultraviolet oxidation and distillation are all technologies used in combination to production of laboratory, pharmaceutical or ultra pure water.

How do I know what method to use?

You need to consider your application, the quantity of the water you need for your application and the existing condition of your feed water. If you are performing HPLC, Atomic Absorption, Mass Spectrometry or Gas Chromatographic Analyses, you will probably need a system that uses activated carbon, organic absorption, and deionization technologies.  If you need bacteria-free water, then microporous filtration or  ultrafiltration are better methods for your application. Given this information a water purification system can be matched to your needs. A call to one of our knowledgeable technical representatives may be helpful in deciding which system is the best one for your company.


CD Manufacturing

DVD Production

In vitro fertilization


Laser Systems

Medical research

Medical Devices

Optical Disc Production



Space exploration

Other Applications