Total Kjeldahl Nitrogen as (N)

Metformin hydrochloride, neat, Solvent-neat, Unit 5g, # of units-1, Cas.no. 1115-70-4

2,2',4,4'-Tetrabromodiphenyl ether, 1.2ml x 50ug/ml, nonane

5,6-Chrysenequinone, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 2051-10-7