2,4-TDI Derivative, 1000 µg/mL in DMSO, 1ml

2,3,3',4',5,5'-Hexachloro-4-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

High Boiling Sulfur in White Oil for Diesel Fuel Analysis 2 50 ppm S in sulfur-free White Oil (20 cst); units: 1x5mL vials Benzo[b]naphtho[2,1-d]thiophene (0485,16) + Benzo[b]naphtho[2,3-d]thiophene (0484,16) (1:1)

Valifenalate, 100 µg/ml, Acetonitrile, 1ml