The surface must dry evenly. If puddles develop, the solution will become more concentrated. This will affect the performance of the coating applied over it. After the surface has dried, use a vacuum to remove the powder that is created by etching. Failure to remove this powder will result in poor adhesion.
Painting can begin when the surface is chemically neutral and dry.
It is capable of producing severe chemical burns as a result of contact with skin or eyes. Muriatic acid is also capable of producing marked irritation of the nose and throat resulting from the inhalation of vapors. In some cases, contact with the eye will cause blindness. All persons handling this material should be aware of this danger and avoid these hazards. Any eye contact with muriatic acid solution should be followed immediately by irrigating the eyes with plenty of water.