What are the metal contents of the silica used in Cogent TYPE-C HPLC columns - FAQ
October 8, 2012
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Metal impurities testing via ICP (Inductively Coupled Plasma) analysis is performed for the following, along with acceptance specifications:
---Al: Not more than 5.0 ppm
---Fe: Not more than 20.0 ppm
---Ti: Not more than 0.5 ppm
---Mg: Not more than 5.0 ppm
---Ca: Not more than 15.0 ppm
---Na: Not more than 20.0 ppm
It is important to note that the actual levels may be significantly lower then those in the table.
---Al: Not more than 5.0 ppm
---Fe: Not more than 20.0 ppm
---Ti: Not more than 0.5 ppm
---Mg: Not more than 5.0 ppm
---Ca: Not more than 15.0 ppm
---Na: Not more than 20.0 ppm
It is important to note that the actual levels may be significantly lower then those in the table.