Custom mix, Deuterated Phenol Mixture 8,in toluene assorted concentrations 5x5mL C4: 2407.10 4-n-Butyphenol-d4 100µg/mL 2282.10 4-tert-Butylphenol-d9-2,3,5,6-d4 100µg/mL

Paraoxon-ethyl, 10.0 µg/ml, Acetone, 10ml

Thiophene in Toluene Units: 5x1mL ampoule, 1x10mL screw-capped bottle Chiron No. Concentration µgS/g (ppm) Wt.% S-4053-0 Blank 0 S-4053-K 1 000 0.1000 S-4053-2.5K 2 500 0.2500 S-4053-5K

ICP Mix