Table 7 Wash retention of alpha-cypermethrin and pyriproxyfen in Royal Guard.
Active ingredient (a.i.) | No. of washes | Actual a.i. content (g/kg)* | Relative standard deviation (RSD) | Actual a.i. retention (% of wash 0) |
|---|---|---|---|---|
Alpha-cypermethrin | 0 | 5.2 | 4.5 | – |
1 | 5.0 | 5.3 | 96.3 | |
3 | 4.9 | 1.9 | 94.7 | |
5 | 4.7 | 2.8 | 89.9 | |
10 | 4.3 | 5.0 | 82.9 | |
15 | 4.1 | 2.1 | 78.6 | |
20 | 4.0 | 2.8 | 76.2 | |
25 | 3.7 | 4.2 | 71.9 | |
Pyriproxyfen | 0 | 4.3 | 5.1 | – |
1 | 3.8 | 3.4 | 89.3 | |
3 | 3.5 | 2.1 | 80.3 | |
5 | 3.3 | 2.7 | 75.5 | |
10 | 3.0 | 3.6 | 69.7 | |
15 | 2.7 | 1.4 | 62.7 | |
20 | 2.5 | 7.1 | 57.5 | |
25 | 2.3 | 2.8 | 54.3 |
