Precision and Recovery Solution, 1.2ml, nonane Back Catalog number: EPA-513PAR Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended S-4171-10MLX5 Daily Quality Control Standard (without Internal Standard) 14 Analytes, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% n-Hexane 12 Toluene 9 n-Heptane 20 Eth Price on request S-4054-5K-10XY Dibenzothiophene in Xylene Units: 5x1mL ampoule, 1x10mL screw cap bottle Chiron No. (Matrix) Concentration Isooctane Xylene White oil 3 cst µgS/g (ppm) Wt.% S-4055-0-IO S-4054-0-XY S Price on request 0218.17-10MG 11H-Benzo[b]fluorene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 243-17-4 Price on request