Table 2 Reproducibility of the test results on Olyset™
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 | 4.0 | 8.0 | 12.0 | 14.2 |
2 | 3.1 | 8.2 | 12.1 | 14.8 |
3 | 4.2 | 7.8 | 11.8 | 14.0 |
Average value | 3.8 | 8.0 | 12.0 | 14.3 |
Standard deviation | 0.5 | 0.2 | 0.1 | 0.3 |
Variation coefficient (%) | 17.7 | 2.0 | 1.0 | 2.4 |