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 1.8+E03 ± 1.3+E02 0.67 ± 0.35 0.53 ± 0.05 0.11 ± 0.10 0.21 ± 0.04 0.28 ± 0.04 0.71 ± 0.11
1.6 1.08 0.04 -0.21 -0.78 -0.84 -0.82
1.0E+03 3.2+E04 ± 4.1+E03 0.53 ± 0.14 0..68 ± 0.02 0.03 ± 0.00 0.23 ± 0.02 0.33 ± 0.02 1.01 ± 0.07
1.2 2.8 0.26 -0.13 0.33 0.39 0.50
1.0E+04 3.7+E04 ± 2.5+E04 1.62 ± 2.3 0.8 ± 0.08 0.09 ± 0.02 0.3 ± 0.35 0.5 ± 0.65 0.8 ± 0.06
2.0 0.14 0.95 -0.22 0.66 1.17 0.34
1.0E+05 1.5+E05 ± 1.1+E05 0.91 ± 0.33 0.47 ± 0.03 0.08 ± 0.03 0.29 ± 0.06 0.33 ± 0.07 0.89 ± 0.09
5.1 2.67 0.00 -0.29 0.50 0.67 0.56
 Control 4.4+E00 ± 1.6+E00 0.26 ± 0.02 1.03 ± 0.09 0.09 ± 0.00 0.19 ± 0.00 0.25 ± 0.01 0.73 ± 0.01
0.2 0.01 0.00 0.01 0.00 0.00 0.00
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 2: Sensor values for Bacillus thuringiensis spores in filtered tap water.