Gold parting in 1860's Australia. It is able to refine gold up to 99.5% purity. The process involves blowing a stream of chlorine gas over and through a crucible filled with molten impure gold. Impurities in the gold form chlorides before the gold does and these insoluble salts are removed from the melt by skimming the surface. Invented by Emil Wohlwill in 1874, this produces the highest purity gold (99.999%). It is an electrolytic process using pure gold for the cathode (or titanium as a starter cathode) and chloroauric acid (gold chloride-hydrochloric acid) as the electrolyte; this is made by dissolving gold
The Essence of Black Purity The Essence of Black Purity The Essence of Black Purity is the third release by the black metal band Watain. It was released in 1999 on EP format on Grim Rune Records and was limited to 300 copies. Grim Rune website mentions that the EP "got a generally good response in the underground circuits." Similarly, Eduardo Rivadavia of "Allmusic" wrote that Watain "quickly gain[ed] underground credibility" with this "uncompromising 7" release". When asked his opinion about Watain's older albums, vocalist Erik Danielsson said: "I appreciate them for what they are, monuments of what we were before, pieces of evolution. The