Not official USP-NF text
ASPIRIN, CODEINE PHOSPHATE, ALUMINA, AND MAGNESIA TABLETS
PF LGS# Brand Type of Test Additional Information
10(4) L1 MicroBondapak C18 Assay and Limit of . . . . free salicylic acid; { Alternative reagent
10(4) L1 Chromegabond M-C18 Assay and Limit of . . . . free salicylic acid;(Assay for aspirin & codeine phosphate); repr. 11(1); see Aspirin & CP Tabs.
11(5) L1 Chromegabond M-C18 Dissolution See Aspirin and Codeine Phosphate Tablets; reprinted 12(1)
11(5) L1 MicroBondapak C18 Dissolution { Alternative reagent
10(4) L1 Chromegabond M-C18 Identity See Assay
10(4) L1 Chromegabond M-C18 Uniformity of dosage units Meet req.