Caffeine

Pyrenyl-1-O-glucuronide, 50µg/mL, Solvent-methanol, Unit 50µg, # of units-1, Cas.no. 15417-05-2

2-Chloronaphthalene, 100µg/ml in Acetonitrile, 5ml

800 ppm TDS solution (box of 25x20mL sachet)