Mercury Standard for ICP, TraceCERT(R), 10 mg/L Hg in nitric acid (nominal concentration)
a-Amylase from Bacillus amyloliquefacies liquid, =250 units/g 250ML Sigma-Aldrich
Silver nitrate trace metals basis 50g Sigma-Aldrich
Copper(I) bromide 25 G 99.9% trace metal basis SIGMA
TRIMETHYLAMINE N-OXIDE DIHYDRATE 100 G Sigma-Aldrich
3,3',5,5'-Tetramethylbenzidine (TMB) 100 ml Liquid Substrate System for Membranes Sigma-Aldrich
Solanidine, phyproof(R) Reference Substance