1. EZVI is nanoscale iron that is placed into a biodegradable oil emulsion . 2. The application of an oil emulsion may be effective and less toxic. 3. 1911 : Nivea Creme the first stable water-in-oil emulsion is introduced. 4. Butter and margarine are both water-in-oil emulsions , composed of stabilized water droplets dispersed in oil. 5. It was first isolated in water-oil emulsions used as lubricants and cooling agents for cutting metals. 6. Electrostatic coalescers use electrical fields to induce droplet coalescence in water-in-crude-oil emulsions to increasing the droplet size. 7. But what about the truffle oil emulsion ? 8. The system relied on fixing nebulized and adapter-ligated DNA fragments to small DNA-capture beads in a water-in-oil emulsion . 9. In oil production, co-produced water is mixed with the oil in choke valves and process equipment producing water-in-oil emulsions . 10. So water extended ( water in oil emulsion ) and water based ( oil in water emulsion ) defoamers appeared.