2575 NW Graham Circle - Troutdale - OR - 97060 - Phone: 503-661-7700 - Fax: 503-669-9107

TYPICAL METAL IMPURITIES

ULTRA HIGH PURIFIED GRAPHITE

(All Grades)

Element Content / ppm (wt) Method
Boron               B 0.20 AP
Sodium            Na   <0.05 AAS
Magnesium     Mg <0.02 ICP-AES
Alumimum       Al 0.08 ICP-AES
Silicon              Si 0.10 AP
Potassium       K <0.10 AAS
Calcium            Ca <0.04 ICP-AES
Titanium           Ti <0.09 ICP-AES
Vanadium         V <0.07 ICP-AES
Chromium        Cr <0.07 ICP-AES
Manganese      Mn <0.03 ICP-AES
Iron                     Fe 0.04 ICP-AES
Nickel                Ni <0.10 AAS
Copper             Cu <0.08 ICP-AES
Total Ash <5 Burn Out
ICP-AES    : Inductively Couple Plasma-Atomic Emission Spectrometry
AP             :  Absorption Photometry  
AAS           :    Atomic Absorption Spectrometry 
"<"             :   shows less than Detection Limit. 

 

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