Further information on suitable products
There are a wide range of websites providing environmental information on products but it is difficult to find unbiased sites or sites that have a local context (ie brands and models available here).
Aside from contacting Finance and Business Services here at the University you could try the Queensland Government. The QLD Government has published a Sustainable Procurement Policy. As a result of that they are developing online resources to assist Government Departments with "green" procurement. More information will become available over time, however a good starting point are the two below links.