Compatible with RO, NF, and UF membranes from all major manufacturers.
- Specifically formulated to control high concentrations of calcium and other sulfates.
- Controls sulfate scale over a large concentration range.
- Strong dispersing capabilities
- Liquid formulation is convenient and easy to use.
- Can be used in tandem with Pretreat Plus® and ProTec™ RO products to boost control of fouling.
- NSF/ANSI 60
Application
Pretreat Plus® Gypsum Concentrate should be injected into the feed-stream prior to the static mixer and cartridge filter. Effective pH range is 3 –13. If frozen, may be thawed and mixed before use. Stability is excellent, but best used within 12 months. Complete and long-term stoppage of calcium sulfate crystalliza-tion makes it unique for stabilizing supersaturated brine in storage or passage through distant discharge pipes.
Dosage
In the useful dosage range of 0.1–8.0 mg/L (neat), control of a wide range of inorganic scales at up to 100 x saturation values or higher of calcium sulfate is possible. By monitoring the concentrate stream and trend charts, optimal dosage can be achieved for the control of scales including that from calcium carbonate, calcium sulfate, barium sulfate, strontium sulfate, iron hydroxide, aluminum hydroxide and silica.
Specs
- Appearance: Clear, Pale Amber Liquid
- Product pH (neat): 7.0 ± 1.0
- Specific Gravity: 1.26 ± 0.07
- Feed water pH: 3.0 - 13.0