Tests to identify the presence of sugars, starch, proteins, fats and vitamin C.

The corrosion resistance of iron and steel can be improved by treatment with sulfuric and phosphoric acids. Other metals are also affected through the introduction of chemicals.

The removal of scale from hard water from sinks, taps, toilet bowls, washbasins, baths, kettles and steam irons. All use some form of acid as the active ingredient.

Cleaning the insides of ovens using powders, liquids, gels, sprays and pads.