2,4-DB-methyl ester, 250mg

Carmine, Natural red 4 (E 120), neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 1390-65-4

WS Disinfection By-Products - Cal Check 1

5-Methylchrysene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 3697-24-3