Metal Contents of the Silica Used in Cogent TYPE-C HPLC Columns - HPLC Primer
Date: 8-OCTOBER-2012 Last Updated: 1-DECEMBER-2025
Metal impurities testing via ICP (Inductively Coupled Plasma) analysis is performed for the following, along with acceptance specifications:
It is important to note that the actual levels may be significantly lower then those in the table.
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
--- 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.