pH 6.0 Standard @ 25°C

(+/-)-Normetanephrine-?,ß,ß-d3 hydrochloride,100 µg base/mL,MeOH,1mL,

6PPD-quinone, 100µg/ml in Acetonitrile, 1ml

Terbufos-sulfone, 100 µg/ml, Acetonitrile, 1ml