A flame photometer is used to measure sodium, potassium, calcium, and lithium in samples. It is widely used in biochemistry and clinical chemistry labs. Students aspirate liquid samples into a flame to generate light emission. The intensity of light corresponds to ion concentration. Helps in diagnosing electrolyte imbalances. Easy-to-use equipment with digital readings. Requires calibration before use. Essential for analyzing blood and urine samples. Supports medical diagnostics and research.