Chemicals - Avista Membrane Treatment Solutions
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Avista Membrane Chemicals

Avista is a global brand of Kurita is focused on membrane treatment solutions for reverse osmosis (RO) systems, microfiltration/ultrafiltration (MF/UF), and multimedia filtration (MMF).

We offer a global line of Avista membrane treatment chemicals manufactured worldwide to cover a full spectrum of foulants and scales, including Vitec antiscalants, RoClean membrane cleaners, biocides, Kuriverter AC chlorine scavengers, and RoQuest coagulants.

Our regionally available line of Avista membrane chemicals includes AvistaClean MF cleaners, RoCide biocides, and AntiChlor chlorine scavengers, among others.

  • All Avista membrane chemicals are compatibility tested in accordance with key protocols accepted by the industry’s leading manufacturers.
  • The industry’s trusted membrane chemical dosing software, Avista AdvisorCi is used by trained technical engineers and Avista partners to provide accurate chemical projections.
  • We’ve expanded technical support and laboratory capabilities globally to include the Avista Black Box monitoring device, Avista Membrane Autopsy with Chromatic Elemental Imaging™, Avista NormRO data normalization, and Avista OSCAR off-site cleaning and restoration.‍

The Avista approach to diagnosing, solving, and validating membrane treatment solutions helps to determine the right membrane chemicals to achieve peak system performance and operator confidence.

Vitec™ AntiscalantsRoClean™ CleanersBiocidesAvistaClean™ MF CleanersChlorine ScavengersRoQuest™ Coagulants
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All products are color coded for easy identification:
GLOBAL PRODUCTS
REGIONAL PRODUCTS
Vitec Antiscalants

The AvistaVitec antiscalant line inhibits scale while also dispersing colloidal particles. The inhibition and dispersant properties of Vitec products help extend system run times, reduce cleaning frequency, and increase the productive life of of reverse osmosis (RO) elements. They are also highly effective at low dose rates. All formulations are NSF approved and UK Drinking Water Inspectorate (DWI) approved for specific products.

Antiscalant|Global|Vitec
Vitec 1070

Vitec 1070 is a liquid antiscalant and dispersant for use in seawater desalination and waters with low metal concentrations.

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Antiscalant|Global|Vitec
Vitec 1141

Vitec 1141 is a powerful, wide spectrum, liquid antiscalant and dispersant that is highly effective at low dose rates and in a wide range of feedwaters such as brackish, wastewater, and seawater.

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Antiscalant|Global|Vitec
Vitec 1200

Vitec 1200 is a liquid antiscalant and dispersant that is phosphorus free.

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Antiscalant|Global|Vitec
Vitec 3000

Vitec 3000 is a powerful, wide spectrum, liquid antiscalant and dispersant that is highly effective at low dose rates and in a wide range of feedwaters such as brackish, wastewater, and seawater.

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Antiscalant|Global|Vitec
Vitec 4000

Vitec 4000 is a liquid antiscalant and dispersant that offers excellent silica scale inhibition and allows increased system recoveries in high silica feedwaters.

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Antiscalant|Global|Vitec
Vitec 7000

Vitec 7000 is a multicomponent liquid antiscalant and dispersant that provides a high level of sulfate inhibition and allows increased reverse osmosis (RO) system recoveries in challenging waters.

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Antiscalant|Regional|Vitec
Vitec 1400

Vitec 1400 is a proprietary liquid antiscalant designed to inhibit a wide range of scales including carbonate, sulfate, and silica in municipal feedwaters where metal (i.e., aluminum) concentrations in the feed are low but silica scale potential is elevated.

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Antiscalant|Regional|Vitec
Vitec 1500

Vitec 1500 is a liquid antiscalant designed to inhibit or reduce aluminum silicates, calcium phosphate, and silica scale.

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Antiscalant|Regional|Vitec
Vitec 3025

Vitec 3025 is a full spectrum, liquid antiscalant for high organic and silt waters that have a lower potential for carbonate, sulfate, or silica scaling.

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Antiscalant|Regional|Vitec
Vitec 5100

Vitec 5100 is a liquid antiscalant designed to inhibit or reduce aluminum silicates, calcium phosphate, and silica scale.

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Antiscalant|Regional|Vitec
Vitec 7000A

Vitec 7000A is a proprietary liquid antiscalant and dispersant designed to inhibit scale and disperse colloidal particles in reverse osmosis (RO) and nanofiltration (NF) membrane systems.

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Antiscalant|Regional|Vitec
Vitec 7200

Vitec 7200 is a proprietary liquid antiscalant and dispersant designed to inhibit scale and disperse colloidal particles in reverse osmosis (RO) and nanofiltration (NF) membrane systems.

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Antiscalant|Regional|Vitec
Vitec 7400

Vitec 7400 is a liquid antiscalant with a unique blend of polymer and phosphonate components used for systems with both high silica and sulfate challenges.

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Antiscalant|Regional|Vitec
Vitec 8100

Vitec 8100 liquid antiscalant and dispersant is biodegradable, compatible with organic coagulants, and highly effective at low dose rates, allowing for economic system operation.

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Antiscalant|Regional|Vitec
Vitec 8300

Vitec 8300 liquid antiscalant and dispersant is biodegradable, phosphate free, and compatible with all membrane types.

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Antiscalant|Regional|Vitec
Vitec SR

Vitec SR is a proprietary liquid antiscalant and dispersant developed for sites that discharge into sensitive environments.

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RoClean Cleaners

Avista™ RoClean™ cleaners provide efficient and cost-effective removal of many different foulants and scales. All products are low foaming and membrane compatible. These products come in a variety of pHs, and the line contains a liquid and powder product for most foulants and scales. RoClean cleaners are highly buffered and contain a unique blend of ingredients that wet and break up foulant, suspend the foulant in solution, and disperse the foulant to prevent redeposition. All formulations are NSF approved and/or EN12124 compliant for drinking water treatment chemicals for specific products.

Cleaner|Global|RoClean
RoClean P111

RoClean P111 powder is a multicomponent, high pH buffered cleaner formulated to remove severe biofouling including polysaccharides, severe colloidal fouling, and moderate humic/fulvic acid fouling.

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Cleaner|Global|RoClean
RoClean P112

RoClean P112 powder is a multicomponent, high pH buffered cleaner specifically formulated to remove silica scale than hydrofluoric acid and ammonium bifluoride solutions, which are potentially hazardous.

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Cleaner|Global|RoClean
RoClean P303

RoClean P303 is a multicomponent low pH buffered powder cleaner formulated to remove severe calcium carbonate scaling and moderate metal fouling and metal-organic complexes.

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Cleaner|Global|RoClean
RoClean P903

RoClean P903 is a low pH, fast-acting cleaner designed to remove iron, manganese, aluminum, metal-organic complexes, clays, phosphate scale, and colloidal material from reverse osmosis (RO) membranes.

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Cleaner|Global|RoClean
RoClean L211

RoClean L211 is a liquid multicomponent, high pH buffered, low foaming cleaner formulated to remove colloidal silica, clay, organic color, and bioslime from reverse osmosis (RO) membranes.

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Cleaner|Global|RoClean
RoClean L212

RoClean L212 is a high pH, liquid cleaner free of EDTA and phosphate and formulated to remove humic and fulvic acids, aluminum silicate clay, colloidal material, mild silica scaling, and bioslime.

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Cleaner|Global|RoClean
RoClean L403

RoClean L403 liquid is a multicomponent, low pH cleaner formulated to remove severe calcium carbonate scaling, moderate metal fouling, and metal-organic complexes.

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Cleaner|Global|RoClean
RoClean L811

RoClean L811 liquid is a multicomponent, high pH buffered cleaner formulated to remove severe sulfate scale, phosphate scale, moderate carbonate scale, and calcium complexes.

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Cleaner|Regional|RoClean
RoClean L011

RoClean L011 liquid is a multicomponent, high pH buffered cleaner formulated to remove oil and grease that may be found in reverse osmosis (RO) systems used in wastewater reuse applications.

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Cleaner|Regional|RoClean
RoClean L211F

RoClean L211F is a high pH, low foaming, environmentally friendly, liquid cleaner formulated for foulants that build up on reverse osmosis (RO), nanofiltration (NF), and ultrafiltration (UF) membranes that treat seawater.

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Cleaner|Regional|RoClean
RoClean P312

RoClean P312 powder is a multicomponent cleaner formulated to remove particulates and reduce high differential pressure.

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Cleaner|Regional|RoClean
RoClean P611

RoClean P611 powder is a multicomponent, high pH buffered cleaner that is free of phosphate and EDTA.

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Cleaner|Regional|RoClean
RoClean P911

RoClean P911 is a high pH buffered cleaner formulated to remove humic and fulvic acids as well as specific pretreatment chemicals, such as coagulants and antiscalants, from overfeeding.

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Chlorine Scavengers

Membranes can last for days or years depending on the care they receive. Chlorine in feedwater can permanently damage membranes, requiring them to be replaced. Unique Avista formulations remove free and combined chlorine from RO system feedwaters to protect membranes from oxidation damage. These chlorine scavengers are certified for use in systems producing potable water, are odorless and stabilized to prevent off-gassing, making it ideal for indoor installation.



Resources
Scale Inhibitors
Scaling within reverse osmosis (RO) systems is a serious matter. Not only does scaling drastically reduce system performance, but the abrasive scale deposits may also cause irreversible damage to the rejecting membrane surfaces.
Learn More
Cleaning Spiral Wound Membranes
All reverse osmosis (RO) systems foul over time. Symptoms of fouling include a decrease in normalized permeate flow, an increase in salt passage, or an increase in differential pressure.
Learn More
The Role of Coagulants in Reducing Colloidal Fouling
Micromedia filtration (MMF) is the most economical means of removing colloids from within reverse osmosis (RO) feedwater. However, to be effective, in-line coagulation is required upstream of the filters. With coagulation, colloid removal rates of 95% to 99% are typical.
Learn More
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