Yep, any 232 weapons will do, including Ulduar25 normal and Coliseum10 normal weapons. Some people seem to believe that you're only allowed to use 226 weapons with exceptions for the Ulduar10 hard mode weapons, this isn't true.
So basically, you can have 232 main hand/off hand/ranged/wand/relic and 226 for the rest. In terms of where gear comes from, that's the following:
Allowed:
- Heroic/Naxx/OS/EoE gear from any players/difficulty
- Heroism, Valor, Conquest badge loot
- Any Tier 7, Tier 8 set items
- Trial of the Champion normal/heroic gear and weapons
- Ulduar10 normal/hard mode gear and weapons
- Coliseum10 normal mode weapons ONLY (armor is not allowed)
- Ulduar25 normal mode gear and weapons
- Frozen Orb craftables, BoE epic world drops
- Runed Orb craftables
Not allowed:
- Triumph badge loot
- Any Tier 9 set items (including the 232 set)
- Coliseum10 any difficulty armor
- Coliseum10 hard mode weapons
- Coliseum25 any difficulty anything
- Ulduar25 hard mode armor or weapons
- Crusader Orb craftables