Greiss reagent kit provides simple and well characterized colorimetric assay for nitrites, and nitrates that have been reduced to nitrites, with detection limit of about 100nM Anion Detection, Cell Analysis, Cell Metabolism, Cell Viability, Proliferation and Function, Ionic Homeostasis and Signaling, Nitric Oxide Research, Nitro-Oxidative Stress Order Info Shipping Condition: Room Temperature