Posters 161-180 P162.A reliable method for detection of ractopamine in bovine muscle by LC-MS/MS attending regulatory safety levels adopted by certain markets.Granja, R.H.M.M., Microbioticos Laboratories LTDA, Brazil P164.BEADYPLEX: A novel multi-antibiotic flow cytometric screening method for food commodities.Charlier, L., Unisensor, Belgium P166.Analysis of tranquilizers in pork tissue using LC-MS/MS.Schittko, S., Eurofins WEJ Contaminants, Germany P167.Chloramphenicol and nitrofuran metabolites - a combined method for fast and reliable monitoring of shrimps.Schittko, S., Eurofins WEJ Contaminants, Germany P168.Polypeptide antibiotics in food control - Contribution to reduce drug resistance .Schittko, S., Eurofins WEJ Contaminants, Germany P169.Non-target and unknown screening of food samples using high resolution LC-MS/MS.Stahl-Zeng, J., Sciex, Germany P170.Multi-compound and multi-class identification and quantification using high resolution LC-MS/MS.Stahl-Zeng, J., Sciex, Germany P172.Development and Strengthening of Radio-Analytical and Complementary Techniques to Control Residues of Veterinary Drugs and Related Chemicals in Aquaculture Products. Cannavan, A., IAEA, Austria P173.Effect of heat treatments on sulfadiazine and trimethoprim residues in cow and goat milk with a new LC-UV method.Papapanagiotou, E., Aristotle University of Thessaloniki, Greece P176.Residues in poultry fed with high content of polyphenols.Galarini, R., Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche, Italy P180.Development of a multi-residue method for ß-lactam antibiotics in meat using UHPLC-MS/MS.Di Rocco, M., Teagasc Ashtown Food Research Centre, Ireland