PURE H2O RODI-UFSUPERIOR STEAM QUALITY FOR AUTOCLAVES ELIMINATES CROSS CONTAMINATION

high purity water for advanced decontamination in dentistry

#1 CHOICE FOR AUTOCLAVES

world leading water purification

The use of tap water (or water from poorly maintained point of use RO water treatment systems) inautoclaves can lead to cross contamination of surgical tools and patients.

At the forefront of technological advances, our world class systems are the only equipmentoutperforming industry standards. For spotless surgical tools your Autoclave requires the highestquality water. The patented RODI-UF system from PureH2O delivers perfection.

High purity water for superior steam quality in autoclaves eliminates the possibility of crosscontamination of surgical tool and patient, by preventing scaling, stabilising lipopolysaccharides(LPs) in endotoxin complexes and ensuring 100% microbiological protection, eliminatingpyrogens, pathogens and endotoxins.

Ours is the only RO system, worldwide, with EPA certification and are fully MHRA compliant,meaning they are the only equipment suitable for use on non microbiological safe water.

Established for over 35 years, the RODI-UF purification process is the choice of leading healthprofessionals throughout the world. Exclusively available from The Pure H2O Company.

Roger WiltshireManaging DirectorThe Pure H2O Company

pureh2o.co.uk

UNIQUE PROPERTIES OF THE PURE H2O RODI-UF SYSTEM• IQ EMP (Intelligent Memory Panel)• Advanced flushing technology• Micro Switch Activation Mechanism (MSAM)

RODI-UF from The Pure H2O Company

the RODI-UF process explained

WHY RODI - UF?Removal capacityReverse Osmosis is by itself anexcellent method for removal ofimpurities. It has the capacity toremove up to 70% of nitrates,96% of lead, 98% of heavymetals, 98% of chemicals, 100%disease causing micro-organisms,pathogens and viruses ifcontrolled by an intelligentsystem.

Our unique process couples ROto DI with intelligent controls,achieving 99.99% purity acrossthe spectrum of impurities, bothnaturally occurring and man-made.

UF screens (0.02-0.0008 microns)are an essential part of thetreatment process and the onlyproven method of eliminatingpathogenic or pyrogencontamination from water.

Lower service costsThe patented RODI process is theonly system that incorporates aunique auto-flushing mechanismto remove the build up of plaquefrom the membrane.

This feature helps our membranesto last up to ten times the lifespanof other RO systems. This couldmean a saving of over £1000 onmembrane replacement over aperiod of ten years. Ask about ourservice commitment and freeextended warranty.

Consistent 99.99% purity The patented RODI process is theonly system benefitting fromintegral micro switches for totalisolation from mains water whenthe storage tank is full.

It’s essential that the ROmembrane is separated frommains water pressure when thetank is full. Without this functionimpurities bleed through to the‘pure’ storage.

The unique management systemused with RODI ensures purity iskept to the highest level possible.

Water efficiency We are the only company tohave achieved high levels ofwater efficiency in our domesticsystems. Our RO process achieves2:1 production ratio whilst RODIachieves 3:1.

Other RO systems use basicmechanical valves resulting inlower levels of water efficiency.

Our RODI equipment is unique,utilising high quality microswitches and an intelligentmanagement system thatminimises water usage andmaximises purity.

70-98% PURE

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Stage One:Granular Activated Carbon (GAC)The Carb12 pre-filterremoves chlorine and otherorganic impurities andserves to protect Stage Two,the Reverse Osmosismembrane, from damage.

GAC is an excellent mediafor the absorption ofchemicals found in raw tapwater but has little or noaffect on dissolved solids,micro-organisms, heavymetals, pathogens andviruses.

Jug filters and filter taps usesmall quantities of GAC asthe primary process toimprove the taste of tapwater. GAC is an effectivefiltration media rather thana purification process.

Stage Two:Reverse Osmosis(RO)With the chlorine removed,the raw tap water passes intothe Reverse Osmosis module.Our own patented thin filmcomposite (TFC) membrane isthe only RO with USEnvironmental ProtectionAgency (EPA) certificationmeaning this is the only ROsystem certified suitable forthe removal of micro-organisms from water.

At 0.0001 microns it’scapable of removing 100%of disease causing micro-organisms and up to 98% ofinorganics and 70% ofnitrates.

Our patented flushingmechanism removes scaleand biofilm extendingmembrane life to up to tenyears.

Stage Three:De-Ionisation(DI)Another unique and essentialfeature of our patentedsystem is the de-ionisationmodule. The impurities thatbreach RO can only beremoved by DI. This stage isan ion exchange processremoving heavy metals,nitrates1, gases, volatileorganic chemicals2 andoestrogens, replacing themwith hydroxide (OH) orhydrogen (H), better known tous as H2O. The result is PureH2O, the purest wateravailable.

1 Nitrates have a habit of mimickingoestrogen and starving the redblood cells of oxygen. They shouldbe removed from drinking water.2 Nitrates and volatile organicchemicals hide the hydrogen bondof the water molecule that makesthem invisible, thus, passing throughRO but not DI stages.

Stage Four:Aquashield UltraFiltration (UF)Unique to the RODI process isthe Aquashield UF polishingmembrane that physicallyprevents migration ofmicroorganisms through toessential sterilisationprocesses. UF is a low pressuremembrane that has differentproperties and advantagesover Reverse Osmosis (RO).Whereas RO (with intelligentmanagement system) willremove ionic load (up to99.99%) from a water source,it is not suitable for removal ofmicroorganisms because theycan change shape (much likean octopus) and squeezethrough the microscopic poresof the membrane.

The unique Aquashield UFstage in our processeliminates 100% of water-borne, disease causing,microorganisms.

UF eliminates 100% of water-borne microorganisms

THE PATENTED RODI PROCESS

pureh2o.co.uk

PREVENTING CROSSCONTAMINATIONThe use of tap water (or water from poorlymaintained point of use water treatmentsystems) in autoclaves can lead to crosscontamination of surgical tools and patients. Inparticular, pathogens from blood transferredonto tools during a check-up or surgery, orpyrogens (1) from body fluids will find a foodsource in the scale and detritus baked ontotools during the decontamination process.Any surface that comes into contact withbacteria has potential for pyrogencontamination. Endotoxins tend to stick toglassware and are difficult to wash away withsoap and water. Autoclaving can sterilize thesurface of glassware, however, endotoxins thatcling to sides tend to be too heat-resistant tobe removed practices for sterilization anddepyrogenation of materials, equipment andproducts that must be free from microbial andpyrogenic contamination.

TAP WATER STANDARDS IN THE UKStandards for drinking water microbial qualityrely on faecal indicator bacteria (E. coli, TotalColiforms, Enterococci) in drinking water andassume that, if faecal indicator bacteria arenot present, the water is consideredmicrobiologically safe. This has beenincreasingly challenged over the years. Severalauthors have shown that outbreaks ofwaterborne disease have occurred despite theabsence of faecal indicators in source waterand/or treated water (2).

Furthermore, many publications report thelimited correlation between the presence andconcentration of faecal indicators and thepresence and concentration of waterbornepathogens. They demonstrate in particular thatfaecal indicator bacteria are poor surrogatesfor protozoa and viral pathogens (3). Therefore,safety from testing a small volume of treatedwater is not satisfactory.

Tap water standards in the UK are certainlysome of the best in the world, but there is awide variance in quality from the North to theSouth, the North being predominantly softwater with conductivity of 20—50ppmTDS whilstthe South is predominantly hard withconductivity anywhere from 250-500ppmTDS.In the past 5 years, at least 7 Water Utilities havefailed to meet the maximum permissible levelsfor metaldehyde (slug poison). Without theequipment to remove this pesticide, manydrinking supplies are failing to meet EUregulations.

GETTING DECONTAMINATIONRIGHTAll staff involved with decontamination indental care services are required to be familiarwith and practice as Heath Care TechnicalMemorandum 01-05-Decontamination inPrimary Care Dental practices. Implicit in thisare cross-references to other standards andspecifications. US Pharmacopeia (USP) limit forendotoxin content in Water For Injection (WFI) is0.25 EU/,l (BS EN 13060).

Steam quality used in dental contaminationimpacts two crucial areas 1) prevention ofscaling and 2) stabilising lipopolysaccharides(LPs) part of the endotoxin complex if thedivalent cations Ca++ and Mg++ are notcontrolled.

The use of distilled water, typically supplied byBP, has long been the preferred source of waterfor autoclaves. Today however, the use of small-scale Point of Use Reverse Osmosis purificationsystems is becoming a preferred and moreconvenient method for an on-tap supply ofpurified water. With BP, the client understoodthat the company employed Quality Controlmeasures to guarantee water quality.

Because of a cheap influx of Reverse Osmosissystems from Asia, quality control has been lostand water produced from such equipment willbe sub-standard in comparison.

It is possible therefore that diminishing qualitycontrol over the water quality feedingautoclaves could lead to cross contaminationfrom surgical tools (failing the decontamination/sterilisation process) to patient.

NOT ALL RO IS CREATED EQUALA well-engineered Reverse Osmosis system isdesigned on the principal that the membranerequires substantial differential pressure if it is tobe able to reject the ionic load from the feedwater. This necessitates a management systemto control ‘deact’ and ‘react’ pressures in sucha way that maximum differential is achievedacross the membrane. A flushing mechanism(4) will also prolong membrane life and qualitywell into the tenth year of the system’s lifespan.Systems without these features will fail relativelyquickly with blocked membranes andmicrobiological creep across the membrane.

The flood of cheap Asian systems made theequipment very affordable - but at what price?These cheap RO systems use a very simplemechanical valve to deactivate the unit onceits reservoir is full but they fail to see the pressureleading to a state where the system isperpetually active (with water permanentlyrunning to drain) with minimal differentialpressure on the membrane.

A further problem is with the cheap drain valvesused; early blocking leads to membranefouling and as a result the ‘permeate’ (purifiedwater) degrades quickly and over time willbecome worse that the tap water feeding it.

As ions and microbes build up in the highpressure side of the membrane with nowhereto go the level of dissolved solids in solutionincreases proportionately to the volume ofwater passing through the membrane so thateven with a +90% rejection rate the permeatemay have a greater level of dissolved solidsthan tap water itself.

RODI-UF water

WORLD CLASS RODI SYSTEMSTFC (5) Reverse Osmosis systems pre-treatedwith GAC are certainly the best individualprocess for Deionization of water but giventhe level of purity required for sterilization, it isnecessary to post treat RO with an IX (Ion-exchange) bed. This should be a nucleargrade bed of mixed cation and anion resin,the properties of which exchange anyremaining ions for hydroxide and hydrogen.

REMOVAL OF IONIC LOAD FROM WATERHowever, Reverse Osmosis is not a provenmethod for the removal of micro-organismsand since it is necessary to eliminatepathogenic or pyrogen contamination fromwater, the only proven method is UF screens(0.02-0.0008 microns) which are therefore anessential part of the treatment process giventhe need to remove pathogen and pyrogenfrom feed water.Washer disinfectors used in dentaldecontamination provide cleaning processesvalidated within EN that include water qualityspecifications. Typically in addition to waterquality different cycles require differenttemperatures e.g. flush <45°C and thermaldisinfection >80°C.

WORLD CLASS RODI SYSTEMSThese differing but crucial demands arecatered for in The PureH2O Company’s stocksystem of pre-treatment, reverse osmosis, ionexchange and final filtration, producing watertypically 15-16MΩ resistivity filtered ≤µ forparticulate and endotoxin control. Thesetherefore eliminate gross contamination inflush comprising blood, tissue, bonefragments, fluids and solid debris through tohigh purity steam in autoclaves ensuring that safety of the instruments are not compromisedby the decontamination process.

The PureH2O Company specialise in ReverseOsmosis systems that are controlled withintelligent management systems, reducingthe amount of water consumed in productionof permeate to a minimum whilst achieving99.99% purity and elimination of micro-organisms through the patented DIUF (6)stage. Their range of systems benefit from apatented auto-flush mechanism, preservingthe life of the membrane for up to 10 years.Micro-switches control the deactivation andreactivation of the system whilst stainlesssolenoid valves are part of the deact/reactprocess eliminating any ingress of feed waterwhen the system has shut down.

ADVANTAGES OFULTRAFILTRATION• No chemicals added to the water

• Reduces turbidity and removes pathogens in a single treatment step

• Absolute barrier to bacteria, virus and parasites

• No deactivated pathogens remain in treated water

• Regardless of feed water fluctuation, no change in treated water quality

The term ultrafiltration (UF) describes amembrane with a pore size <20nm (0.02 µ).This is smaller than viruses and much smallerthan bacteria. Membranes of this type havedemonstrated full virus rejection whenchallenged by MS2 phages.

Unlike Reverse Osmosis (RO) UF does notaffect mineral content of the water greatly,only rejecting suspended solids, not dissolvedsolids.

References: (1) Pyrogens are bacterial cell wall fragments and can bedetected by using a test for lipopolysaccharides (anenzyme found in pyrogens).(2). Barrelletal.2000(3). Petrilli et al. 1974; Berg & Metcalfe 1978; Melnick &Gerba 1982; Paymentetal.1985; Roseetal.1986;Barrelletal.2000; Griffin et al. 2001; Nwachuku et al. 2002(4.) Flushing mechanism on consumer units is a patentedprocess by Aquathin Corporation (The PureH2O Company)(5) Thin Film Composite membrane first introduced by ThePureH2O Company in 1991 to European markets(6) Cummings et al. 2005 development of UF processesfor disaster relief

high purity water for superior steam quality in autoclaves

RODI - UF SYSTEMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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water purification systems

RODI-UF 120ltr/hrPURE H2O RODI-UF 1200+

SemicommercialRODI-UF systemwith intelligentmanagementprocessor

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RODI-UFPURE H2O RODI-UF 600+

SemicommercialRODI-UF systemwith intelligentmanagementprocessor

60tr/hr

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Most water efficient, technologically advanced system in the Worlddelivering 16-18Meg water suitable for autoclaves and surgical use fromone compact RODI process.

RODI-UFPURE H2O RODI-UF

SubSink RODI-UF systemwith intelligentmanagementprocessor

5ltr/hr

Most water efficient, technologically advanced system in the Worlddelivering 16-18Meg water suitable for autoclaves and surgical use fromone compact RODI process.

Most water efficient, technologically advanced system in the Worlddelivering 16-18Meg water suitable for autoclaves and surgical use fromone compact RODI process.

RODI-UF purification data

Removal rates99.99% micro-organisms99.99% organics99.99% heavy metals99.99% lead99.99% nitrates

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Patented autoflush For prolonged membrane life ten years longer thanstandard RO systems.

Patented micro switch deactivationThe only RO system that accurately deactivatesand reactivates in line with optimum tank pressureresulting in higher levels of purity and consistentproduction rates.

Patented coupling of DI to RODI effectively removes nitrates, VOCs, gases andother impurities that RO cannot effectively remove.

Patented anti-bleed mechanismEffectively minimises impurities breaching the RO stage.

The only reverse osmosis system of its typedesigned and built by World leading RO engineersspanning 50 years global experience.

The auto flush sequence removes plaque build-upfrom the membrane, preserving productioncapacity, maximising rejection, minimising waterusage, maximising recovery rate whist increasingmembrane longevity by 10 years beyond cheaperRO processes available on the market. Servicecosts are cheaper than other systems becausemembranes are covered under warranty so thatclients never pay for replacements.

PURE H2O: RODI - UF

RODI-UF

pureh2o.co.uk

RODI-UF: 600+ & 1200+

RODI-UF 600+ & 1200+ purification data

Removal rates99.99% micro-organisms99.99% organics99.99% heavy metals99.99% lead99.99% nitrates

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Patented autoflush For prolonged membrane life ten years longer thanstandard RO systems.

Patented micro switch deactivationThe only RO system that accurately deactivatesand reactivates in line with optimum tank pressureresulting in higher levels of purity and consistentproduction rates.

Patented coupling of DI to RODI effectively removes nitrates, VOCs, gases andother impurities that RO cannot effectively remove.

Patented anti-bleed mechanismEffectively minimises impurities breaching the RO stage.

The only reverse osmosis system of its typedesigned and built by World leading RO engineersspanning 50 years global experience.

The auto flush sequence removes plaque build-upfrom the membrane, preserving productioncapacity, maximising rejection, minimising waterusage, maximising recovery rate whist increasingmembrane longevity by 10 years beyond cheaperRO processes available on the market. Servicecosts are cheaper than other systems becausemembranes are covered under warranty so thatclients never pay for replacements.

PURE H2O: RODI - UF 600+ & 1200+

pureh2o.co.uk

WHY PURE H2O RODI - UF

PURE H2O RODI-UF overview

EXCELLENCECommended as a supplier of excellence by Royal Institute of British Architecture (RIBA) member Michaelis Boyd for work ontheir prestigious Oxford Gardens project and selected for publication in the RIBA London Architectural Review. The Pure H2OCompany was given the highest rating (HHHH ) of all bottled, tap and filtered waters surveyed by the Daily Mail (10/06/03)

QUALITYTDS: PureH2O membranes are the only RO membrane to deliver 98% rejection. Filmtec, the largest manufacturer ofmembranes has only managed 97% with TFC membranes. Nitrates: RO will only remove 70% nitrates from UK tap water, Theaddition of our DI process will be required to meet this specification. RODI is a patented process, it has a superior rejectionrate of Ionic impurities achieving 96% rejection of lead and up to 98% for all ionic load.

MHRA compliance: Our systems are the only system worldwide with EPA certification. This means that PureH2O RO is the onlyequipment to be suitable for use on non microbiological safe water. Whilst tap water in the UK contains chlorine as a biocideit still, regularly fails to meet microbiological standards including e-coli tests. Our systems are therefore best positioned toprotect the client from these eventualities and can always be relied upon to surpass standards for all forms of sterilisers.

EXPERIENCEAs the pioneer of RO system design in the UK and with 26 years developing RO & RODI equipment within an ISo9001:2008environment, we are well placed to prescribe the best equipment to suit your requirements. We hold over 60 patents thatensure our equipment remains at the forefront of technological advances and provides our customers with uniqueequipment that out perform industry standards.

TECHNICAL SUPERIORITYAll our engineers and technicians go through theoretical and practical training throughout their careers to achieve a higherlevel of professionalism and understanding for how RO equipment works.

RO equipment requires routine maintenance each year to ensure that the system is functioning efficiently. This includesensuring that the rejection rate is not undermined through pressure switches being reset to the correct parameters, pumpschecked, tanks drained, sanitised and re-pressurised to the correct setting.

The result is highly efficient RO equipment producing high purity water well beyond the first three years.

The Pure H2O Company is the leading supplier of watertreatment systems to dental surgeries in the UK.

Unique properties of the Pure H2O RODI-UF system• IQ EMP (Intelligent Memory Panel)• Advanced flushing technology• Micro Switch Activation Mechanism (MSAM)

World leading water purification 35 years pure excellenceAn ISO 9001:2008 certified company

Unit 21 Boundary Business CentreBoundary Lane, Woking, Surrey GU21 5DH

01483 617000

www.pureh2o.co.uk