Lavasol™ liquid membrane cleanerseffectively remove inorganic scale, metals,colloids, biological growth, and organicfoulants from RO membranesLavasol™ liquid membrane cleaners effectively remove a wide variety of foulants from polyamide thin-film composite andcellulose acetate membranes. Each cleaner dilutes quickly andeasily to form a solution that vigorously removes membrane foulantswithout harming the membrane surface. A regular maintenanceprogram including Lavasol™ membrane cleaners ensures optimumsystem performance and maximum element life.

Lavasol I™ - Low pH Cleaner for Removing Inorganic Scale andMetals from Polyamide Thin-Film Composite and CA Membranes.Foulants effectively removed by Lavasol I™ include:

• Calcium Carbonate • Strontium Sulfate• Calcium Sulfate • Iron• Barium Sulfate • Metal Oxides

Lavasol II™ - High pH Cleaner for Removing Acid InsolubleFoulants from Polyamide Thin-Film Composite Membranes.Foulants effectively removed by Lavasol II™ include:

• Silt • Microbiological• Colloids • Acid Insoluble• Organics • Mucilaginous Material

Lavasol III™ - Medium pH Cleaner for Removing Acid InsolubleFoulants from CA Membranes. Foulants effectively removed byLavasol III™ include:

• Silt • Microbiological• Colloids • Acid Insoluble• Organics • Mucilaginous Material

Lavasol IV™ - Neutral pH Cleaner for Removing Organics fromPolyamide Thin-Film Composite, UF and NF Membranes. Foulantseffectively removed by Lavasol IV™ include:

• Organic Acids • Oils• Proteinase Foulants • Waxes• Cellulosic Foulants • Paraffins

Lavasol V™ - For Removing Silica from Polyamide Thin-Film Composite, CA and UF Membranes.

General Mixing andApplication Instructions forLavasol™ Cleaners

• Prepare system for cleaning.

• Fill cleaning tank with goodquality water, preferably ROpermeate water.

• Mix 1 gallon of Lavasol™ foreach 40 gallons of water inthe cleaning tank.

• Re-circulate solution for atleast 1 hour.

• Static soaking heavily fouledmembranes is recommended.After soaking, recirculateagain for a minimum of 30minutes.

• Rinse system at low pressureprior to system start-up.

• Discard system product water for 15-30 minutes after system start up.

Pressure and Element Flows:• Pressure: 60 psi• 4" Element Flow: 7 GPM• 8" Element Flow: 35 GPM

(*Please verify with membrane manufacturer.)

L i q u i d M e m b r a n e C l e a n e r s

© 2009 PWT, Inc.

For more information, contact us today:

USA Headquarters:1048 La Mirada Court, Vista, CA 92081 • Phone: 800-914-9072 or 760-639-4400 • Fax: 760-639-4439www.PWTInc.com • E-mail: sales@PWTInc.comMexico:Puerto Progreso Interior B, Col. La Fe, San Nicolas de los Garza, N.L., MexicoPhone: 52-8989-6577 • Fax: 52-8989-6578 • E-mail: ventas@pwtinc.comChina:Room 1204, Hua Neng Union Mansion, 958 Lu Jia Zui Ring Road, Pu Dong, Shanghai, China 200120Phone: 86-21-68864810; 86-21-68864326; 86-21-68864686; • Fax: 021-68864171 • E-mail: sells@pwt-china.com • www.pwt-china.comMiddle East & Africa:Vasuchem Technologies FZC, A2-62 SAIF Zone, P.O. Box 9446, Sharjah, UAE Phone: 971-6-5570068 • Fax: 971-6-5574068 • E-mail: info@vasuchem.comIndia:Vasu Chemicals, Vasu Centre, Military Road, Marol, Mumbai 400 059, India • Phone: 9122-29209622/23