Vitec®3000 is a proprietary liquid antiscalant/dispersant designed to inhibit scale and disperse colloidal particles in cellulose acetate and thin film membrane separation systems. The formulation has been certified by the National Sanitation Foundation (NSF) under ANSI/NSF Standard 60 for use in producing potable water.

This formulation is compatible with organic coagulants. Coagulants may be indirectly present in municipal feed waters or directly present as a result of coagulation or flocculation treatments upstream of the reverse osmosis system.

Vitec®3000 can be injected neat or diluted and can be used in a widearray of feedwater sources.

Application:

Optimum Vitec®3000 performance is achieved when the chemical is injected downstream of multimedia filters and upstream of cartridge filters.

Dosing Guidelines:

The typical dosage range is between 2 to 5 ppm. A site-specific dose can be determined using the Avista Advisor computer program. Please contact the Avista customer service department for customized dosing instructions.

Dilution:

Vitec®3000 should be diluted with demineralized water or RO permeate. If neither of these water sources is available, softened water may be substituted. The dilution for Vitec®3000 should not exceed 1% by weight (dilutions below 10% by weight must use DI quality water). This guideline will protect the effectiveness of the internal bacteriostat, which inhibits bacterial growth within the drum and feed tank.

Packaging and Storage:

Standard regional pack sizes are listed below. Custom packaging can be provided worldwide to meet customer needs. Information on drumless or bulk tanker delivery is available on request.

Performance:

Powerful inhibitor against a varietyof carbonate and sulfate scale:

• CaCO₃ : CCPP>900 (LSI>2.5)
• CaSO₄ : 3.5xKsp
• BaSO₄ : 105 x Ksp
• SrSO₄ : 20 x Ksp
• CaF : 1000 x Ksp
• SiO₂ : 120ppm

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