Particle emission after rubbing white cardboard boxes expressed as mean particles ≥0.5 and ≥5 µm per m3
| Cardboard boxes from | Particles ≥0.5 µm/m3
(n=5) | Particles ≥5 µm/m3
(n=5) | ||
| Mean | SD | Mean | SD | |
| Soluvit N* | 81 959 | 69 022 | 8049 | 7181 |
| Vitintra adult* | 22 260 | 7404 | 3513 | 1561 |
| Ampoules 10 mL | 75 146 | 37 863 | 16 064 | 13 237 |
| Supleven | 34 086 | 10 635 | 3460 | 688 |
| Overall mean† | 53 362 | 19 946 | 7771 | 3788 |
| Limits airborne particle for Grade C in operation | 3 520 000 | – | 29 000 | – |
| P-value for overall mean; limit is reference group | <0.001 | <0.001 | ||
*Laminated cardboard.
†Overall mean of all 20 determinations.
n, number of samples examined.