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AN additive applied to cotton in the textile opening line lowered the levels of card generated airborne dusts and associated microorganisms. Dust from cotton containing additive had fewer smaller particles than dust from untreated cotton. The additive altered the nominal 1:1 relationship between airborne dust levels measured by vertical elutriator and by the Continuous Aerosol Monitor (CAM) to the extent that recalibration or corrections to data would be required in the CAM system when it is used to monitor dust from additive treated cotton. The decrease in the respirable fraction of card generated dust brought about by the additive could reduce pulmonary response to the dust. The additive had little effect on yarn quality..

THREE additives were applied to seed cotton in the feed control system at the gin to determine the effect of additives on card room dust levels in the textile mill. These data indicate the feasibility of applying additives at the gin for dust control and the effect of additive type, add-on level and seed cotton drying level on control of dust.