Bio-Dex Plaster White 'N Brite for Acid Wash Bio-Dex Plaster White 'N Brite for Acid Wash. This product offers a range of features such as The product eliminates etching and cleans pools betters than using acid alone and compatible with all color surfaces that can be acid washed, No scrubbing, Reduces acid fumes, Removes calcium, copper and other organic and metal stains. Technical specifications and specific features include: Weight: 2.085 kg. Features and Benefits: The product eliminates etching and cleans pools betters than using acid alone and compatible with all color surfaces that can be acid washed No scrubbing Reduces acid fumes Removes calcium, copper and other organic and metal stains Technical Specifications & Specific Features: Weight: 2.085 kg