Table 1 Reproducibility of the test results on broken twill fabric
From: An improved extraction method for surface dosage of insecticides on treated textile fabrics
Sample | Number of cycles | |||
|---|---|---|---|---|
32 | 128 | 512 | 2048 | |
Permethrin concentration in mg/m2 after 32 rubbing cycles | Permethrin concentration in mg/m2 after 128 rubbing cycles | Permethrin concentration in mg/m2 after 512 rubbing cycles | Permethrin concentration in mg/m2 after 2048 rubbing cycles | |
1 | 1.9 | 6.2 | 8.7 | 9.5 |
2 | 1.9 | 6.3 | 8.4 | 8.7 |
3 | 1.9 | 6.4 | 7.9 | 8.7 |
Average value | 1.9 | 6.3 | 8.3 | 9.0 |
Standard deviation | 0.0 | 0.1 | 0.3 | 0.5 |
Variation coefficient (%) | 0.0 | 1.3 | 4.0 | 4.2 |