1. Lab Trial with liquid Microtracer Step 5. Appearance of liquid Microtracer retrieved from the feed and collec-ted on the bottom of plastic container (Nd-magnet is attached underneath)

2. Lab Trial with liquid Microtracer Step 6. Transfer of dispersion of collected liquid Microtracer in aqueous surfactant solution from the plastic container, to the beaker with ABC- coated Nd magnet on the bottom

3. Lab Trial with liquid Microtracer Step 7.Transfer of ABC-coated Nd-magnet covered with liquid Microtracer from the beaker

4. Lab Trial with liquid Microtracer Step 8. Transfer of ABC- coated Nd-magnet with attached liquid mic- rotracer into vial for treatment with hydrochloric acid solution

5. Lab Trial with liquid Microtracer Step 9.Analytical determination of Co(2+) concentration in retrieved portion of liquid tracer Stages: 1. Dissolving attached liquid tracer in HCl ; 2. Addition diethylamine and ammonium thiocyanate in DMSO; 3. Determination of optical density at 667 nm

6. Field trial with liquid Microtracer Validating mixing for liquid feed (500 kg Trial with liquid pig feed manufacturer –Micro Tracers Services, Europe)

7. Field trial with liquid Microtracer

8. NEW R&D Projects Electro/Photochemical Sterilization of Poultry Rinse Water

9. THANK YOU FOR YOUR ATTENTION