Cations Std. Level 4

2-Methyl-4-nitronaphthalene, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 13615-38-8

Benzo[ghi]perylene-d12, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-10, Cas.no. 93951-66-7

L-Glutamic-2,3,3,4,4-d5 acid,1000 µg/mL,0.1 mol/L hydrochloric acid,1mL,