Check the listing for details. Metal Shield by Earth Science ( 32 oz ) ( 62852 ). Condition: New. Listed at 39.99 USD. Earth Science MetalShield ( 32 oz )Part #62852 DescriptionThe Pristine Blue MetalShield product is a liquid formula that is regularly used to prevent and fight against metal staining and scaling in pools. This stain fighter is effective on all types of metals including copper, iron, magnesium, and calcium. MetalShield is compatible with all types of standard pool systems, including chlorine, bromine, and salt. This stain and scale remover is also compatible with all types of pool surfaces.Easy to use liquid formulaSafe for all standard systems and surfacesPrevents and removes metal stains and scalingDirectionsFor Metal Stain Prevention/Weekly Maintenance:Metal shield should be used weekly, as needed, to prevent metal staining. Add 3 ounces per 10,000 gallons of water once per week. No premixing is necessary. Pour directly into the pool, with the circulation system running and while pouring away from the skimmer.Initial Stain and Scale Removal:Prior to treatment: Verify stains are caused by metal. Testing for stains is easy, you could use a suitable test kit, or you can visit ESLMetalShield.com/test for complete instructions for an alternative method to test for metal stains.Balance the Water: Adjust the water balance to standard ranges: pH 7.2 - 7.8, alkalinity 80 - 120, and calcium 100 - 400.Add Metal Shield: Add one quart (32 ounces) of MetalShield for every 10,000 gallons of water. No premixing is necessary. Pour directly into pool, while circulating, and away from the skimmer.Circulate for 48 hours: Run your circulation system for 48 hours while the stains are lifting. Tougher stains may require a second application. If stains persist after two applications, consult a pool professional or your contractor to confirm that the issue is metal related.After stains lift, simply balance the water and resume normal circulation and maintenance.Returns are not accepted on opened or used products and are subject to a 10% restocking fee An RMA/RGA is required to return any item Buyer pays all return shipping If you have any questions, please contact Clearview Fireplace and Patio We would be happy to help Disclaimer: I will follow all applicable federal and state laws and regulations regarding the sale of the pesticideI won’t accept bids from, sell to, or ship to states in which the pesticide is not registered as a general-use product