Some products have limited compatibility and should only be used on select materials. The Techspray G3 Blue Shower cleaner/degreaser is compatible with metal. This item is formulated to work in electronics applications. In addition to the other features this product meets the following standards: Boeing D6-17487 Rev. P, Ford Tox #167818, EPA SNAP Approved. This cleaner/degreaser is packaged 12 units per case.