4-Methylhippuric acid, 100mg

Selenium (Se)

Quantitative Linearity Wax Mixture C16-C44 10µg/ml in Cyclohexane; unit: 1mL, 5x1mL n-Hexadecane C16 n-Octacosane C28 n-Octadecane C18 n-Triacontane C30 n-Eicosane C20 n-Dotriacontane C32 n-Docosane C22 n-Hexat

2,3',4',5'-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL,