Assay method of benzalkonium chloride in ophthalmic preparation by hplc by using c18 column?

03 March 2014 1 6K Report

Exaction process by zinc oxide cream

This work was done by members of my team in Shanghai. It does not use a C18 column (in order to get good peak shape and separation, but is reversed-phase.

http://www.dionex.com/en-us/webdocs/82067-AN237-LC-Benzalkonium-Chloride-Surfactant-Column-LPN2313-03.pdf

(this one has eye drops) and

http://www.dionex.com/en-us/webdocs/113733-AU190-LC-Benzalkonium-Chloride-07Sep2012-AU70189_E%200912S.pdf

(this should also work for eye drops)

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