Table 1.

ΔA values (in %) achieved in the 0.2 m s−1 updraught case for runs where 1000 particles of NaCl per cm3 were added in the range 1×10−20 to 3×10−19 kg.

air massmass (kg) 1×10−203×10−207×10−201×10−193×10−19
clean3.916202528
medium9.1×10−33.8×10−25×10−11.46.5
dirty1×10−22.3×10−24.7×10−26.5×10−21.8×10−1