TABLE 3.
Means and standard errors for results from a yeast toxicity assay showing mean optical densities at a wavelength of 550 nm taken at 8 h of incubation for toxic and nontoxic Stachybotrys chartarum compared to positive and negative controls
| ClO2 concn (ppm) | Absorbance at OD550a
|
|||
|---|---|---|---|---|
| Toxic | Nontoxic | Positive control | Negative control | |
| 500 | 0.567 (0.038) | 1.490 (0.016) | 0.296 (0.073) | 1.398 (0.062) |
| 1,000 | 0.679 (0.055) | 1.474 (0.008) | 0.296 (0.073) | 1.398 (0.062) |
a
OD500, optical density at 550 nm. Low mean absorbancy indicates toxicity. Values in parentheses represent standard errors.