Live cell research and screening applications are mainly based on samples in an aqueous solution. Water objectives allow aberration-free focusing into such samples, but water evaporates at room temperature and cannot be used for long-term experiments. Leica Microsystems has launched a Water Immersion Micro Dispenser that is easy to retrofit and useable with water immersion objectives. As the dispenser plus water reservoir is fully integrated in the microscope and climate chamber, the water is already at the right temperature and does not have to be heated.