Table 5: Experimental conditions for acute inhalation exposure of NDF in male Wistar rat.
| Group |
Nominal Concentrations
(g/m3/min)
|
Amount of Dust Inhaled
(mg/rat)$
|
Animal Died# |
| Control (FE) |
1.65 |
63 |
1/4^ |
| NDF-5 g |
0.95 |
36 |
0/4 |
| NDF-10 g |
1.90 |
73 |
0/4 |
| NDF-20 g |
3.00 |
115 |
0/4 |
| NDF-40 g |
4.55 |
175 |
0/4 |
*Airflow inside the exposure chamber was maintained at 20 lpm/2.5 psi. $Moderately active rat inhaled 150-160 ml of air /min. #Animal died in 14 days observation after acute dynamic inhalation exposure for 4 hrs. ^Death occurred at 3rd day after inhalation exposure.