SPI Metals Group

	Element	%					lead
	Pb	99.9985							This is a reflected light micrograph of polished, carbon coated lead. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. Lead is extremely soft and malleable and therefore impossible to polish. It is so soft that particles of grinding and polishing grit get embedded in the surface, rendering its appearance most unappealing. While adequate for X-ray spectral purposes, we have replaced it in the metmin standard with lead sulphide (galena). Source: .5mm wire- #11902, Alfa Aesar, MA, USA

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Name	Description	SPI #	Each
Lead	SPI SuppliesŪ Individual Mounted Microanalysis Standard Item	AS0480-AB	$199.56