biovisionK505-100cobalt assay kit, cobalt assay, cobalt kit, assay cobalt, measure cobalt level, quantitate cobalt level, cobalt quantitation kit, cobalt, cobalt colorimetric assay kit? Detection method- Absorbance (475 nm) ? Species reactivity- Mammalian ? Applications- The assay is linear in the range 3 to 50 nmol (0.18-3 μg) Cobalt, with a detection limit of ~ 3 nmol (or ~15 μM, 0.18 μg).Cell and tissue culture supernatants, urine, plasma, serum, as well as many other biological fluids