Table 2 Fingerprint quality assessment over 84 h for surfaces submerged in sewage water.
Immersion period (in Hours) | Glass | Stainless steel | Plastic |
|---|---|---|---|
Grade | |||
1–12 | 5 | 5 | 1 |
13–36 | 5 | 4 | 0 |
37–48 | 5 | 3 | 0 |
49–60 | 5 | 2 | 0 |
61–72 | 5 | 2 | 0 |
73–84 | 4 | 1 | 0 |
Immersion period (in Hours) | Glass | Stainless steel | Plastic |
|---|---|---|---|
Grade | |||
1–12 | 5 | 5 | 1 |
13–36 | 5 | 4 | 0 |
37–48 | 5 | 3 | 0 |
49–60 | 5 | 2 | 0 |
61–72 | 5 | 2 | 0 |
73–84 | 4 | 1 | 0 |
