The parent company of Central Dairies says a piece of equipment has been identified as the source of contamination, causing a black residue and early spoilage of some 2% milk products.
Agropur launched a voluntary recall of 2% Central Dairies milk with expiry dates between September 20 and 30, but problems persisted, involving some products with expiry dates between September 30 and October 4.
The company says the equipment in question is not critical to their manufacturing process. It has been temporarily bypassed and will be permanently removed in the coming days.
Agropur is hopeful that the measures now taken will result in a drop in complaints for milk beyond the October 4 expiry date.
Among the other measures taken have been increased frequency of deep cleaning, and the implementation of a thermal sanitation step.