2-Butanone-2,4-DNPH, 100mg

Isocaffeine (1,3,9-Trimethylxanthine), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 519-32-4

Formaldehyde-DNPH Level 3 (1.0ug/mL)

D10-Parathion-ethyl, 100 µg/ml, Acetone, 1ml