Portable and light-weight, W2 Optronics’s handheld fluorometer provides exceptional sensitivity, rapid-reading, and reliability at a much lower cost compared to the industrial standards. This is an important device for applications in the fields of life-science, chemistry, medicine, and environment. Either alone or with specific reagents, this convenient device can be used for detecting the quality of drinking water, contamination of foods, and presence of various bacteria, just to name a few, right on the spot. This versatile handheld fluorometer can be configured with up to two excitation wavelengths and two detection wavelengths for multiple applications. Standard calibration is easily done via the touch-screen. Built-in USB interface allows user to retrieve up to 80 data points for each of the three assays stored in the memory.