Sure Klean Vana Trol is a Sensitive brick & stone cleaner.
Vana Trol is a concentrated acidic cleaner for new masonry surfaces that are subject to vanadium, manganese and other metallic stains. Vana Trol is designed to simplify rinsing and reduces the potential for efflorescence.
Manufacturer: Prosoco
Available in 1 gallon and 5 gallon containers.