TABLE 1.
Materials used in this study, their properties, and the time for percent reduction values for the multisurface study, quantified by plaque assaya
| Material | Properties | Log change after 2.5 h of drying | R2 value | Time for % reduction (h) |
SD (all TfPR values) | ||
|---|---|---|---|---|---|---|---|
| 90% | 99% | 99.90% | |||||
| Surgical mask | H−, P | −0.64 | 0.955 | 44.68 | 83.32 | 121.96 | 0.63 |
| Stainless steel | H−, NP | −0.56 | 0.982 | 38.02 | 75.84 | 113.66 | 5.26 |
| Tyvek coverall | H−, NP | −0.7 | 0.962 | 39.02 | 72.65 | 106.27 | 9.17 |
| Disposable gown | H−, NP | −0.18 | 0.946 | 28.65 | 63.73 | 98.82 | 3.69 |
| Cotton t-shirt | H+, P | −1.34 | 0.904 | 33.94 | 58.97 | 84.00 | 9.76 |
| Bank note | H−, NP | −1.13 | 0.955 | 27.97 | 51.42 | 74.86 | 4.65 |
| Polyester sports shirt | H+, P | −3.66 | NA | <2.5 | NA | ||
a
Material properties: hydrophobic (H−), hydrophilic (H+), porous (P), and nonporous (NP). TfPR, time for percentage reduction of values for the multisurface study. The final column provides standard deviations, applicable to all 3 values. Data are sorted in descending order by time to 99.9% survival rates. NA, not applicable.