Check the listing for details. SLOW PHOS | Slow Dissolving Polyphosphate Beads (1 lb). Condition: New. Listed at 24.95 USD. Slow Phos is a unique form of polyphosphate beads that sequester hardness minerals, prevent precipitation of minerals found in water supplies, as well as preventing internal mineral deposits within the water distribution system. This form of slow dissolving polyphosphate beads makes it especially beneficial in providing ongoing and stable PO4 water treatment. Maintains water clarity through functional sequestration of minerals and scale control Reduced corrosion by inhibiting corrosion throughout the water distribution plumbing. Gradual removal and inhibition of existing mineral scale deposits and prevention of these formations in hot water lines and residential water heaters. SLOW PHOS can be fed at different concentrations in order to fit particular treatment situations or requirements. Normally a concentration of SLOW PHOS at threshold levels of 0.5-5.0 ppm polyphosphate will inhibit scale and corrosion. Applications: Hard Water Bullet Industrial Cooling Towers Refrigeration Equipment Vending Machines Air Conditioning Equipment Water Purifying Equipment Water Coolers Pre-filter for RO Equipment Evaporative Coolers Coffee Machines Food Service Equipment Water Wells Ice Machines Domestic Water Systems Typical phosphate dissolution rate: 90-180 days. Shipping Free shipping promotions exclusively apply to the contiguous 48 states. This applies regardless of whether the product description or the free shipping offer mentions it. For international, Puerto Rico, Alaska, and Hawaii orders, free shipping offers do not apply. Please get in touch with us to obtain a shipping quote and check product availability for further information. Terms of Sale We accept returns within 7 days of item delivery. TO GET A REFUND, THE ITEM MUST BE UNUSED. We'll take back any unused and unopened items within 7 days of when they were delivered. Please note that we can't refund shipping and handling charges, and you'll need to cover the return shipping costs. We'll subtract the original shipping cost from your refund once we receive the goods in their original, unopened, and unused condition at our warehouse. Unfortunately, we can't accept opened or used products for return; they will be sent back to you. If you purchased items with Free Shipping Offers, a 20% restocking fee will be applied to your final refund.