4-Phenyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 104601-39-0

High Boiling Sulfur in Toluene for Diesel Fuel Analysis 1 50 ppm S in sulphur-free Toluene; unit: 1x5mL vials Benzo[b]naphtho[2,1-d]thiophene (0485,16) + Benzo[b]naphtho[2,3-d]thiophene (0484,16) (1:1)

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

Atrazine-desisopropyl D5 (ethylamino D5), 100µg/ml in Acetone, 1ml