Deputy director-general Scott Gallacher said he had heard reports one shipment worth $1.5 million was held at Shanghai pending a 1080 test certificate.
“We have been in close contact with a range of trading partners, including China, and they have responded very positively and constructively,” he said.
“The Chinese said overnight (Wednesday) they were not aware of any hold-up.
“But if any exporters of dairy products to any markets are having difficulties they should talk to us.
“Shipments can be held up for a variety of reasons in different countries, even different ports.”
The NZ Infant Formula Exporters Association chief administration officer Chris Claridge earlier said one container had been blocked at Shanghai pending a 1080 test certificate.
Most recently his company, Carrickmore, sent a container on February 26, when the 1080 test certificate was not a requirement in the documentation.
Claridge didn’t think finished products had been or were being tested for the presence of 1080 poison, nor were all the components of what is called dry blending in the registered infant formula manufacturing plants.
It would, therefore, be difficult for the ministry to issue a certificate guaranteeing safety from 1080 for every can.
Carrickmore products were blended and packed at the GMP Dairy plant in South Auckland that was capable of producing 40,000 tonnes a year.
