Supposing that you are reffering to alkali cleaners,well,first of all, it's important to know what alkali cleaners are used for. They are good at cleaning all kind of greasy surfaces, as glass, fiberglass , porcelain,stainless steel,chrome surfaces etc. The manner of cleaning is surface degreasing by removing and suspending the grease, which could be washed away by rinsing the surface, after degreasing.
The solutions of alkali cleaners could be more or less concentrated, they coming in a wide range of types: mild alkali (baking soda), moderately to strong Alkali(ammonia, borax, Tri-Sodium Phosphate), strong alkali (Sodium carbonate) and very strong alkali (Sodium hydroxide).
Also, as all substances, alkali are imposing cautions measures, knowing their effects. They could become toxic, or even lethal, if they are used combined with another cleaners, for example, ammonia could emit lethal gasses, or Sodium hydroxide could cause burns to skin and eyes and it has a high level of toxicity.
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