TABLE 2.
Comparison of average percent recoveries between the HV and standard Envirochek filtersa
| Organism | Site | Turbidity (NTU) | Spiking concn (organisms/liter) | % Recovery (mean ± SE)
|
|
|---|---|---|---|---|---|
| HV filter | Standard filter | ||||
| Cryptosporidium | Bethany | 11 | 10.1 | 51 ± 0.02 A | 43 ± 0.01 B |
| Hood | 99 | 9.4 | 36 ± 0.02 | 37 ± 0.05 | |
| Giardia | Bethany | 11 | 10.3 | 53 ± 0.05 | 61 ± 0.06 |
| Hood | 99 | 10.1 | 0.47 ± 0.00 | 0.83 ± 0.01 | |
a
Three replicate samples were compared. Data are untransformed values. All statistics were determined with arcsine-transformed data.
b
Values followed by the same letter(s) are not significantly different (t test, arcsine-transformed data, P = 0.014).