About Us

O-So Pure Incorporated is based in Phoenix, AZ, USA with manufacturing facilities of more than 2,500 square feet.

FM Mark has designed and patented a small, compact ultraviolet water purifier to fit several point-of-use applications. This process encompasses dual filtration with ultraviolet and reverse osmosis to provide the purest water possible.

Independent lab reports show that O-So Pure systems remove 99% or greater of waterborne bacteria, cyst and fine sediments.

The O-So Pure systems are currently being used in homes, offices, recreational vehicles, restaurants, dental, water vending machines and medical facilities.

v1985 - Incorporation of FM Mark to manufacture, design and assemble custom panels and cables for power plants.

v1992 - FM Mark entered into the water purification business when a company requested him to design and assemble a water purifier for his market in Mexico.

v1992 - FM Mark designed and assembled an ultraviolet disinfection system for that company.

v1993 - FM Mark filed for a US patent for his ultraviolet water treatment devices.

v1995 - A United States Patent (#5451791) was granted for the ultraviolet water apparatus.

v1996 - FM Mark filed O-So Pure as a US trademark.

v1997 - A United States Patent (#5653877) was granted for a unit with a hybrid design of reverse osmosis and ultraviolet merged
              into the same system.

v2000- Mexican Patent Pending.

v2006 - A United States Patent (#6,984,313-B2) was granted for a unit with a revolutionary new self-cleaning UV whole-building
              sterilizer.

v2008 - A U.S. Patent-Pending for a unit that is a revolutionary stand-alone deionization system for use with sterilization
              equipment.

v1993 - Bolin Laboratory- bacteria removal

v1993 - Bolin Laboratory: bacteria removal/ virus removal

v1996 - New Zealand Government- performance test for the removal of bacteria, chlorine and trihalomethane.

v1996 - University Of Arizona- comparison of bacterial concentration between self-cleaning and a conventional filtration system

v1999 - Microbiological Department of the University Of Tennessee Dental College- bacterial analysis report

v2000 - Microbiological Department of the University Of Tennessee Dental College- bacterial challenge against a "chair-mounted" water delivery unit and an O-So Pure System.

v2004 - CRA testing evaluation of dental waterlines, biofilm & water quality, March 2004 Newsletter (page 2)