Olfactometer for entomological research 1. The Y-tube has 30mm stem and 30mm two arms as diameter of the glass tubes 2. PFTE Air connectors and silicone tubings 3. One unit Air pump Suitable for Y tube 4. Two units of air control meters to regulate air pressure with 0.1-1 lpm each 5. Two glass jars for air purification and to removal of VOCs, and humidification. The inlet and outlet from the jars is merged into a single head 6. Two units of glass jars for collection of volatiles The inlet and outlet from the jars is merged into a single head