A fluid dispensing device that dispenses a fluid into a stream of water or any other substance. The dispensing device comprises a conduit with an inlet and an outlet, the inlet being configured to receive the fluid and the outlet being configured to dispense it. The dispensing device also comprises a piston and a spring connected to each other and disposed within the conduit, the spring displacing the piston. 

Purpose: To inject a specific amount of disinfectant fluid into the water entering a cistern. In our particular case, it’s used to inject a liquid substance into the water flow entering the toilet tank, in order to eliminate viruses and bacteria present in the wastewater from the toilet flush. 

nno is an odor extraction system that controls restroom odors at the source, preventing them from spreading throughout the restroom and surrounding areas. It immediately eliminates the discomfort caused by odors, both for the user and those nearby. 

The developed product is a traction cart-shaped sweeper machine that sweeps, collects and packs solid waste on outdoor surfaces 6 times faster than a manual operator, with virtually dust-free sweeping thanks to controlled air guidance and a fine dust filter. 

Wireless device, low cost and good accuracy: <7% gases and <4% meteorology; for environmental monitoring as a predictive and/or analytical tool, measuring in real time the concentration of harmful gases such as CO, CO2, NOx, SO2, O3 and meteorological measurements such as wind speed and direction, relative humidity, temperature and rainfall.