Final Concentration (spores/ml) BioSentry (spores/ml) HACH Turbidity (NTU) HACH TOC (mg/L) HACH Chlorine (mg/L) S::CAN Turbidity (FTU) eq S::CAN DOC (mg/L) eq S::CAN  TOC (mg/L) eq
1.0E+02 2.09+E03 ± 1.0+E03 0.03 ± 0.00 IN 0.06 ± 0.02 IN 0.64 ± 0.07 0.65 ± 0.24
2.0 0.1   0.6   0.17 3.82
1.0E+03 5.15+E03 ± 1.13+E03 5.1 0.03 ± 0.00 0.09 IN 0.07 ± 0.02 1.15 IN 0.61 ± 0.05 0.11 0.5 ± 0.13 2.65
1.0E+04 1.02+E04 ± 1.81+E03 0.075 ± 0.00 IN 0.04 ± 0.00 IN 0.72 ± 0.13 0.88 ± 0.4
7.2 1.6   -0.15   0.31 5.45
1.0E+05 2.14+E05 ± 7.47+E03 0.073 ± 0.00 IN 0.03 ± 0.00 IN 0.82 ± 0.17 1.45 ± 0.1
10.1 1.43   -0.20   0.5 9.66
 Control 2.98+E00 ± 1.08+E00 0.03 ± 0.00 IN 0.03 ± 0.00 IN 0.54 ± 0.00 0.14 ± 0.05
0.8 0.006   0.04   -0.03 0.42
IN=measurement invalid
Top number=average ± standard deviation
Bottom number=dimensionless normalized value, where positive and negative values indicate the magnitude of the increase or decrease in the response of the sensor from background level
Table 3: Sensor values for Bacillus thuringiensis spores in unfiltered tap water.