RadChemDosi? Cell Survival Assay Kit is a chemical based assay that can measure the dose rate of ionizing radiation. Radiation mainly works by producing free radicals that reacts with biomolecules (DNA, protein and lipid) in mammalian and other types of cells. The amount of free radicals produced by radiation is dependent on the dose. RadChemDosi? is an effective way to measure dose rate for ionizing radiation. It is a chemical-based assay that uses the ability of ionizing radiation to induce changes in certain chemicals. RadChemDosi? is useful for blood irradiators where it can be used for periodic calibration and to determine the dose given to blood by simultaneously irradiating RadChemDosi? in small disposable tubes attached to the blood sample by taping the tubes outside the bag. Synonyms: Radiation dosing assay, Gamma radiation assay, dosimetry solution for gamma radiation, cell death assay, cell survival, to measure ionizing radiation.