For surface disinfection of marine fish eggs Buffodine (1.06% free iodine), glutaraldehyde, chloramine-T and sodium hypochlorite (5% free chlorine) were tested using plaice (Pleuronectes plutessa L.) as the main species for evaluation. Glutaraldehyde was the most promising candidate of the four chemicals tested. Good bactericidal effects without any documented negative effects on eggs and larvae were obtained at concentrations of 400-600 mg 1-l and contact times of 5-10 min. Replicated experiments under identical disinfection conditions revealed a clear correlation between the degree of successful surface disinfection and the initial bacterial load of the egg batch.
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