Minister of Foreign Affairs and Trade Murray McCully will tack-on a trip to Sri Lanka over a recall of Anchor-brand milk after reports it contained traces of agricultural dicyandiamide.
The latest finding adds to the infant formula contamination that last week forced Fonterra to defend its brand name.
Two batches of Anchor-branded milk powder have been recalled in the past week under orders from the Sri Lankan Government after reports it may have contained traces of DCD.
Prime Minister John Key said the Government were still trying to get to the bottom of what was happening in Sri Lanka.
"The DCD levels that were measured in New Zealand were at those very low levels, obviously there hasn't been DCD applied for a long period of time now and we're confident our tests were right - the Minister of Foreign Affairs Murray McCully is speaking to the Sri Lankans and may visit potentially quite soon."