Tribromoacetic acid, certified, 0.1g

4-n-Octylphenol, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1806-26-4

pH 4.0 Standard @ 25°C, in water, 100ml

Pentachlorophenol-13C6, 100µg/ml in MeOH, 5ml