You can download MSDS (Data) sheets for this product HERE
Watch Stontex Rust Off application instruction video HERE
Rust-Off is a ready-to-use heavy-duty rust remover suitable for use on many types of natural stone without causing damage.
Rust-Off is effective for dissolving problematic rust stains. Causes for these stains may be iron-containing fertilizers, metal garden furniture, leaking heating systems, etc.
Directions of use: Generously apply undiluted product to the dry surface and distribute with a brush. A purple discolouration shows the start of the reaction. Allow product to work for about 5 minutes, 10 minutes maximum. Do not allow the product to dry. After working time, rinse off with plenty of water.
Important: working time must not exceed 10 minutes.
Repeat procedure in case of unsatisfactory results.
Some stone and coloured concrete may change colour after treatment with Rust-Off.