sun exposure | standard depth | 5 |
1/12 depth | - | |
soaping | original color change | 1~2 |
white fiber stained | 1 | |
flooding | original color change | 3 |
white fiber stained | 1~2 | |
perspiration | original color change | 3 |
white fiber stained | 1 | |
rubbing | wet | 2~3 |
dry | 4~5 | |
ironing | 4 | |
acid and alkali resistant | sulfuric acid | 1 |
acetic acid | 3~4 | |
soda ash | 5 |