Avista - RoClean P303 Low pH Powder Membrane Cleaner

Brand: Avista

RoClean P303 Low pH Powder Membrane Cleaner

Low pH buffered powder cleaner for severe calcium carbonate scale.

RoClean P303 is a multicomponent, low pH, buffered powder cleaner formulated to remove severe calcium carbonate scaling plus moderate metal and metal-organic fouling from reverse osmosis and nanofiltration membranes. It is typically applied for the removal of calcium carbonate scale where a powder product is preferred, using a specialized blend of proprietary buffers, surfactants and chelants. It maintains optimum pH over a wide temperature range.

Fill the cleaning tank with RO permeate or deionized water, heat to the maximum temperature acceptable under the membrane manufacturer guidelines, and add enough P303 for a 2 percent solution by weight for moderate to severe fouling or 1 percent for mild fouling. Run through each stage individually for at least 60 minutes, with an optional soak of up to 8 hours. With carbonate scale the pH tends to rise as acid is consumed, so monitor pH and add cleaner or prepare a fresh batch if it climbs. Rinse with RO permeate before returning to service.

Available Options

• 45 lb Pail (Item RT0049-45)
• 350 lb Drum (Item RT0049-350)

Key Features

• Low pH acidic cleaner: use solution pH 2.4 to 3.8 at 2 percent, 20 C
• Targets severe calcium carbonate scale, with moderate metal and metal-organic fouling as secondary
• Appearance white powder with complete water solubility
• Cleaning concentration 2 percent by weight for moderate to severe fouling, 1 percent for mild
• Maintains optimum pH over a wide temperature range
• NSF certified for use as an off-line cleaner in systems producing potable or drinking water
• Suitable for reverse osmosis and nanofiltration, and for use alongside other Avista cleaners
• Highly buffered to resist pH change during the cleaning cycle
• Recirculate a minimum of 60 minutes per stage; heavily fouled elements may soak up to 8 hours
• Recirculation flow per vessel: 10 gpm (2.4 m3/hr) for 4 inch elements, 40 gpm (9.0 m3/hr) for 8 inch elements
• Compatible with polyamide membranes from all membrane manufacturers
• Mix with RO permeate or deionized water heated to the maximum temperature allowed by the membrane manufacturer
• Unopened shelf life 12 months when stored between 45 and 100 F (7 to 35 C)
• Aluminum, brass, copper and mild steel are not recommended for use with this product

Ideal Applications

• Severe calcium carbonate scale removal where a powder is preferred
• Systems that have run past LSI limits or lost antiscalant dosing
• Moderate metal and metal-organic complex fouling
• Nanofiltration softening systems fouled with carbonate scale