When it was tested by experts, they found it was made of glass laced with a small quantity of pure zinc.

Extremely pure zinc reacts only slowly at room temperature with acids.

However, only "pure" zinc coated steel is typically referred to as PPGI.

Improvements include the use of purer grades of manganese dioxide, better sealing, and purer zinc for the negative electrode.

Cadmium is also taken by precipitating it from the solution of zinc sulfate used to make pure zinc by electrolysis.

Apparently amalgamated zinc was less prone to degradation by an acidic solution than is pure zinc.

This makes a pure zinc that is known as "SHG" or special high grade.

German chemist Andreas Sigismund Marggraf is normally given credit for discovering pure metallic zinc in 1746.

Stolberg lost its importance as a brass producer when pure zinc became available in the middle of the 19th century.

He invented a procedure for the industrial production of totally pure zinc.