Actual concentration  
(µg mL-1)
Intra-day (n=5) Inter-day* (n=5)
Foundconcentration
(µg mL-1)
RSD (%) Foundconcentration
(µg mL-1)
RSD (%)
  5.00 4.96 0.50 4.95 0.54
SAX 50.00 50.10 0.18 49.92 0.22
  100.00 99.62 1.07 98.86 0.94
  MET 2.5025.0050.00 2.4924.8949.88 1.520.120.78 2.5225.0150.12 0.270.481.03
*Results of five different days
Table 4: Results from intra-day and inter-day precision experiments for SAX and MET.
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