title: Colourimetric assay of chlorhexidine in contact lens solutions using methyl orange.
mesh_terms: D001391:Azo Compounds; D002710:Chlorhexidine / Q000032:analysis*; D003124:Colorimetry; D003261:Contact Lenses; D009883:Ophthalmic Solutions / Q000032:analysis; D013053:Spectrophotometry
chemical_list: D001391:Azo Compounds; D009883:Ophthalmic Solutions; C100258:methyl orange; D002710:Chlorhexidine