Multi-Element Internal Standard

1332 ppm TDS solution (box of 25x20mL sachet)

Nitrofen, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 1836-75-5

Diltiazem hydrochloride,1000 µg base/mL,acetonitrile,1mL,