The gas contractor linked to a mix-up that killed a newborn at a Sydney hospital also supplies gas to Canberra and Calvary hospitals, the ACT Government has confirmed.

BOC Ltd has come under scrutiny after a mistake which saw two infants at Bankstown-Lidcome Hospital given nitrous-oxide instead of oxygen.

One of the babies died, while another suffered suspected brain damage.

After an interim report into the incident was released, NSW Health Minister Jillian Skinner said she believed the blame was shared between the hospital and BOC Ltd.

NSW Health has stopped using BOC until a full investigation into whether the company is responsible is complete, and a hospital engineer has been stood down.

Confirming that ACT Health also uses BOC to supply gas to hospitals, an ACT Government spokeswoman said the gas systems had been used without incident in the ACT.

"ACT Health has been using the gases without issue, however like many other hospitals has immediately sought BOC technicians to undertake specialised testing of equipment over and above current controls," she said.

"This will provide increased system assurance whilst the gas supply industry and health networks understand the cause or causes of recent tragic events in New South Wales."

The testing will begin at both the Canberra Hospital and Calvary Hospital next week.

Yesterday it was revealed a similar mix-up occurred in a Brisbane Hospital serviced by BOC 10 years ago.

That error was detected before any patient was administered the wrong gas.