Wikipedia:Reference desk/Science: Difference between revisions
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:Depending on the accuracy you need it could be very cheap. [[Energy-dispersive X-ray spectroscopy]] would be the trick for every thing in down to the 1% range. Going down to ppm it is expensive.--[[User:Stone|Stone]] ([[User talk:Stone|talk]]) 10:32, 10 February 2011 (UTC)
::Five percent for each amount (factor 0.95 to 1.05, not percent of the total sample mass) would be fine. What, approximately, would mean "cheap" in this context? [[Special:Contributions/77.3.134.134|77.3.134.134]] ([[User talk:77.3.134.134|talk]]) 10:52, 10 February 2011 (UTC)
:::The general field is [[elemental analysis]]. That article mentions several methods. There are many companies that will do contract-work analysis of customer samples--a quick google or business-directory search involving the (quoted) phrase might find some with rates posted (or at worst, would give a ballpark over the phone/email) for various levels of accuracy. [[User:DMacks|DMacks]] ([[User talk:DMacks|talk]]) 15:18, 10 February 2011 (UTC)
== biology ==
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