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CR Scientific

Platinum Wire Loop for Bead Tests (Qualitative Analysis of Minerals)

Update February 2019:  We have a few of these in stock

Platinum wire is used for flame tests and especially bead tests of minerals and other unidentified inorganic compounds.  See the classic texts, such as Orsino C. Smith's Identification and Qualitative Analysis of Minerals or Frederick Pough's Field Guide to Rocks and Minerals.

Platinum (Pt) is virtually inert, being resistant to attack from most chemicals.  Unlike nickel-chrome, iron, or other wire materials, platinum won't contaminate bead tests with any color of its own.

We sell platinum wire loops for the classic sodium carbonate, borax, and salt of phosphorus bead tests. 

Make sure your assay material doesn't contain arsenic, antimony, or manganese, any of which can embrittle the wire at high temperature and cause it to break.  (Use crucibles or charcoal for these.)   With proper care, a platinum wire loop will last indefinitely.

An essential tool of traditional mineralogy, prospecting, and old-time chemistry. 

Platinum wire loop in glass handle

Loop diameter:  approx. 2/10ths of an inch
Wire length:  approx. 1 3/4"
Wire diameter:  26 gauge (about 0.016" or 0.4 mm dia.)

Platinum wire loop
for bead tests & flame tests
Part # PTLOOP.............. $56.95 ea.


Please note that we do not currently sell platinum wire by itself.  

Related Items

Charcoal pieces
Mineral Hardness Kit

Please be sure to wear safety goggles and / or face shield and carry out all experiments in the proper laboratory environment.  Platinum acts as a catalyst for many reactions;  keep it away from methanol and from mixtures of H2 and O2 gases.  

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