PT  - JOURNAL ARTICLE
AU  - Y Cloutier
AU  - JL Malo
TI  - Update on an exposure system for particles in the diagnosis of occupational asthma
AID  - 10.1183/09031936.93.05070887
DP  - 1992 Jul 01
TA  - European Respiratory Journal
PG  - 887--890
VI  - 5
IP  - 7
4099  - http://erj.ersjournals.com/content/5/7/887.short
4100  - http://erj.ersjournals.com/content/5/7/887.full
SO  - Eur Respir J1992 Jul 01; 5
AB  - We have previously designed a system for exposure to particles and described the preliminary results in 20 subjects exposed to occupational sensitizers in powder form (Cloutier Y, et al. - Eur Respir J, 1989; 2: 769). Modifications have been made to the particles generator, exposure chamber and sampling ports. Furthermore, in order to improve the stability of concentrations in the exposure chamber and to make the system easy to operate by a technician, it has been completely automated using closed-loop feedback regulated by a computer program.