... the SEM concentration is subsequently obtained. 2. Technical specifications Sensitivity: 0.1 ppbDetection limitTissue (Chicken, duck, porcine meat, beef and mutton ... each2) 6× standard solution (1 mL each): 0 ppb, 0.1 ppb, 0.3 ppb, 0.9 ppb, 2.7 ppb and 8.1 ...