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In 1817, Percival became a full partner in his father's assaying firm this is the same year often referenced to be the year when the Johnson Matthey Company was established. Through his work, he proved to his father that he was a skilled assayer and mineralogist. In the paper, Percival Johnson showed that small quantities of platinum mixed with gold and silver in nitric acid cause a facilitated separation of pure gold, from the solution. During his apprenticeship, he published the following paper Titled: Experiments which prove platina, when combined with gold and silver, to be soluble in nitric acid. (the oldest national chemical society in the world) Percival's grandfather was an assayer of ores and metals, in London, during the late 1700's.Īfter his grandfather's death, Percival's father, John Johnson (1765–1831), took over his father's business and got involved in the platinum trade.Īt the age of 15, Percival Johnson (1792-1866), became an apprentice, in his father's firm. Percival Johnson was the founder of Johnson Matthey company he was also a founding member of the Royal Society of Chemistry. The company dates back to the grandfather of Percival Norton Johnson. The Johnson Matthey Company has a long history of refining platinum group metals. This guide is here to assist you in preserving the value of your savings and or investments through precious metals bullion while helping patients battle cancer.īGASC - Customer Reviews link Affiliate Ad Nanoparticle Cancer Research, and supports individuals who are Battling Cancer. However, it is a little unusual to other guides because it also advocates for Gold
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