Mecarbam, 100 µg/ml, Toluene, 5ml

2-Nitrofluorene-d9, 100µg/ml in Toluene, 1ml

Caffeine-d3 (1-methyl-d3), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 26351-03-1

Copper (Cu), 1000µg/ml in 2%-HNO3/Water, 100ml