Air Carrier First Officer reported a pallet loaded with DG cargo which was not in compliance with the Air Carrier's restrictions was scheduled to be loaded. After conferring with the Captain the DG cargo was refused.

Narrative

I noticed a pallet of DG in the cargo area which raised my awareness since I mostly fly days and don't carry a lot of DG. In the past a pallet of DG was pretty unusual. I tend to use the job aid because of my infrequent DG inspections. When it came time to inspect it I opened the job aid to answer my question on when a pallet was allowed. Under Number 1 it stated three circumstances and it appeared we didn't comply with any of them. I did a conversion from KG to LBS after mentioning to the Captain I didn't know the conversion; he stated a rough conversion. The amount they had was well below the 'heavyweight' allowance. I told the Agent it was probably an issue and asked the Captain if he wanted me to call the Supervisor to back us up on the rules. The Supervisor stated we were correct. We asked if they had a DG container to which they stated 'no'. We subsequently asked for the DG to be removed because it didn't pass the rules of inspection. The Agent understood our issue and removed the pallet.