Purpose: to distinguish 18ct WHITE gold from stainless steel; the implication being that if;it is neither; it MIGHT be platinum (unlike the other tests; this is not a 'positive' test).;Most people call this the 'Platinum' bottle. At the same time (whilst distinguishing white;gold from steel or platinum) it will tell you if the metal is 14ct or 18ct.;HOWEVER; all these tests must be done in conjunction with the BLUE fluid; this;(Green) bottle cannot be used on its own.;None of this is necessary for testing yellow metals; this is only to distinguish WHITE gold;from steel or platinum.
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