Stainfree is an all natural citric acid product that eliminates metal staining to pool liners and finishes. Stainfree is idea for treating staining on all pool surfaces. Use Natural Chemistry's METALfree and you have the ultimate 1-2 combination for stain fighting!

• Less expensive alternative to ascorbic acid
• Effective on vinyl and fiberglass surfaces
• Compatible with all sanitizers and pool surfaces
• Phosphate-free formula
• 100% citric acid
• All natural way to eliminate staining