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The examinations included milk delivered from 22 gathering stations of the Dairy Products Factory in Siedlce. In total 154 milk samples were tested. The concentration of lead (Pb) and cadmium (Cd) in milk was determined by atomic absorption spectroscopy. Residual antibiotics with beta-lactam ring were assessed by the Penzym test, while a quick diffusion test was used to discover the presence of inhibiting...
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