sodic

Run a few cubic centimetres of distilled water into that division of the plate base containing the sodic hydroxide.

Place a small heap of dry granulated soda (or half a dozen tablets of sodic hydroxide) by the side of the pyro tablets.

Titrate against n/10 sodic hydrate solution using phenolphthalein as the indicator.

If the lead is present as sulphate in sodic acetate solution, it is well to render it distinctly alkaline with ammonia.

The nickel is separated from the solution by boiling with sodic hydrate, filtering, and dissolving the precipitate in nitric acid.