Table 2: Preparation and composition of ECD calibration standards, blank, and quality control samples.

SampleWECD (1) (mg/vial)WKit (2) (mg/vial)WS (3) (mg/vial)%WS (4) (%, w/w)

Kit blank (BkKit)0.0025.610.000.00
ECD Calibration standards
  StdECD no. 10.7826.270.1230.47
  StdECD no. 20.8926.000.1400.54
  StdECD no. 30.9726.100.1520.58
  StdECD no. 41.0726.040.1680.65
ECD QC samples (QCECD)
 QC-L0.237.270.0360.48
 QC-M0.277.230.0420.57
 QC-H0.317.190.0490.65

(1)Nominal weight of ECD in ECD Kit.
(2)Total weight of ECD Kit.
(3)Nominal weight of sulfur in ECD Kit.
(4)Percentage of sulfur (%, w/w) in ECD Kit.