SPI Metals Group

	Element	%					tungsten
	W	99.95							This is a reflected light micrograph of polished, carbon coated tungsten wire. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. Source: .25mm wire- W-108, ROC/RIC, Sun Valley, CA, USA

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Name	Description	SPI #	Each
Tungsten	SPI SuppliesŪ Individual Mounted Microanalysis Standard Item	AS0420-AB	$199.56