While colorimetry is the main use of a colorimeter, determining a substance’s absorbance is not the instrument’s only job. Colorimeters serve unique purposes in different industries. More specifically, colorimeters are used to test water quality — screening for chlorine, fluoride, cyanide, and other potentially harmful chemicals. Additionally, colorimeters aid in determining the concentration of enriched plant nutrients in the soil, hemoglobin in blood, and identifying low-quality and imitation drugs. Due to the colorimeters versatile and quite critical application, it is important that your instrument remains efficient, precise, and reliable. The best way to achieve this state of performance is ensuring that your colorimeter is calibrated regularly.