pH 4.01 buffer solution (box of 25x20mL sachet)

IP 436-98 Resolution Standard 3 Analytes, each Wt.% as listed in n-Heptane; units: 1x5mL, 5x5mL Cyclohexane 10.0 mg/mL o-Xylene 5.0mg/mL 1-Methylnaphtalene 0.5mg/mL

DL-Laudanosine, 10mg

1,3,7,8-Tetrachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene