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Barrel Diffusion: Drop sources, locations, and probabilities

Tips

There are many ways to get Barrel Diffusion in Warframe, but my recommendation for optimal efficiency would be to try one of these missions (in this order):

  • Earth/Coba : It's a Defense mission (level 6-16). The item is dropped on rotation C (1.84%).
  • Venus/Romula : It's a Defense mission (level 8-18). The item is dropped on rotation C (1.84%).
  • Mars/Kadesh : It's a Defense mission (level 10-20). The item is dropped on rotation C (1.84%).
  • Ceres/Seimeni : It's a Defense mission (level 15-25). The item is dropped on rotation C (1.84%).
  • Jupiter/Sinai : It's a Defense mission (level 20-30). The item is dropped on rotation C (1.84%).
These recommendations are based on the usual missions lengths, and the probability of getting the resource dropped.

Missions with a Chance to Get Barrel Diffusion as a Reward

Planet / Mission Type RotationProbability
Venus / Romula Defense C 1.84
Europa / Larzac Defense C 1.84
Sedna / Sangeru Defense C 1.84
Eris / Akkad Defense C 1.84
Ceres / Seimeni Defense C 1.84
Pluto / Sechura Defense C 1.84
Jupiter / Sinai Defense C 1.84
Mars / Kadesh Defense C 1.84
Earth / Coba Defense C 1.84
Duviri / Endless: Tier 4 Normal 1.49
Duviri / Endless: Tier 6 Normal 1.03

Warframe Rotations Explained

  • Defense: One reward every 5 waves, following this pattern: AABC.
    So, rotation A reward at 5 and 10 waves, B after 15 waves and C for 20 waves.
    Then it starts all over again.


Mobs Dropping Barrel Diffusion

EnnemyProbability
Leekter 10%
Shik Tal 10%
Vem Tabook 5%
Anu Brachiolyst 0.47%
Anu Mantalyst 0.47%
Anu Symbilyst 0.47%
Anu Pyrolyst 0.47%
Arid Seeker 0.02%
Orm Tech 0.02%
Seeker 0.02%
Taro Engineer 0.02%
Taro Tech 0.02%
Tusk Seeker 0.02%
Vorac Engineer 0.02%
Orm Engineer 0.02%
Narmer Tech 0.02%
Axio Engineer 0.02%
Axio Tech 0.02%
Drekar Seeker 0.02%
Frontier Seeker 0.02%
Grineer Manic 0.02%
Juno Tech 0.02%
Kuva Seeker 0.02%
Narmer Seeker 0.02%
Vorac Tech 0.02%