Isos is an uncommon resource that can be found in Corpus Railjack missions. It is used in upgrading the Railjack, building the Voidrig, and building the 
Basmu.
Drop Locations
Mission Drop Tables
| Mission Type | Source | Rotations or Drop Table |
Chance[1] | Quantity[2] | Avg. per roll[3] | Star Chart Nodes |
|---|---|---|---|---|---|---|
| Completion Bonuses | Corpus Proxima Completion Bonuses | A | 14.29% | 5 | 0.7145 |
|
Enemy Drop Tables
| Enemy | Drop Table Chance[4] | Item Chance[5] | Chance[6] | Expected Kills[7] | Quantity[8] | Avg. per roll attempt[9] |
|---|---|---|---|---|---|---|
| Axio Basilisk | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Axio Crewship | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Axio Gox | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Axio Harpi | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Cannon Battery | 80% | 22.11% | 17.688% | 6 | 1 | 0.17688 |
| Corpus Ramsled | 100% | 22.11% | 22.11% | 5 | 1 | 0.2211 |
| Elite Axio Basilisk | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Elite Axio Harpi | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Elite Orm Basilisk | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Elite Orm Harpi | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Elite Orm Weaver | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Elite Taro Basilisk | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Elite Taro Harpi | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Elite Vorac Basilisk | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Elite Vorac Harpi | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Gox Scavenger | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Orm Basilisk | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Orm Crewship | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Orm Gox | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Orm Harpi | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Orm Weaver | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Taro Basilisk | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Taro Crewship | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Taro Gox | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Taro Harpi | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Taro Weaver | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Vorac Basilisk | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Vorac Crewship | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Vorac Gox | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Vorac Harpi | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
| Vorac Weaver | 75% | 22.11% | 16.5825% | 6 | 1 | 0.165825 |
Sourced from the official drop table repository. See Module:DropTables/data to edit on the wiki.
Blueprints Requiring Isos
| Blueprint | Type | Quantity (Research) |
|---|---|---|
| Basmu |
Primary | 450 |
| Carcinnox | Ship Turret | 10 |
| Carcinnox Mk I | Ship Turret | 20 |
| Carcinnox Mk II | Ship Turret | 30 |
| Carcinnox Mk III | Ship Turret | 40 |
| Galvarc | Ship Ordnance | 10 |
| Galvarc Mk I | Ship Ordnance | 20 |
| Galvarc Mk II | Ship Ordnance | 30 |
| Galvarc Mk III | Ship Ordnance | 40 |
| Lavan Carcinnox Mk I | Ship Turret | 20 |
| Lavan Carcinnox Mk II | Ship Turret | 30 |
| Lavan Carcinnox Mk III | Ship Turret | 40 |
| Lavan Engines Mk I | Ship Component | 25 |
| Lavan Engines Mk II | Ship Component | 50 |
| Lavan Engines Mk III | Ship Component | 75 |
| Lavan Plating Mk I | Ship Component | 25 |
| Lavan Plating Mk II | Ship Component | 50 |
| Lavan Plating Mk III | Ship Component | 75 |
| Sigma Engines Mk I | Ship Component | 25 |
| Sigma Engines Mk II | Ship Component | 50 |
| Sigma Engines Mk III | Ship Component | 75 |
| Sigma Plating Mk I | Ship Component | 25 |
| Sigma Plating Mk II | Ship Component | 50 |
| Sigma Plating Mk III | Ship Component | 75 |
| Squad Shield Restore (Large) x100 | Gear | (100) |
| Vidar Carcinnox Mk I | Ship Turret | 20 |
| Vidar Carcinnox Mk II | Ship Turret | 30 |
| Vidar Carcinnox Mk III | Ship Turret | 40 |
| Vidar Engines Mk I | Ship Component | 25 |
| Vidar Engines Mk II | Ship Component | 50 |
| Vidar Engines Mk III | Ship Component | 75 |
| Vidar Plating Mk I | Ship Component | 25 |
| Vidar Plating Mk II | Ship Component | 50 |
| Vidar Plating Mk III | Ship Component | 75 |
| Voidrig Engine | Component | 75 |
| Zetki Carcinnox Mk III | Ship Turret | 40 |
| Zetki Engines Mk I | Ship Component | 25 |
| Zetki Engines Mk II | Ship Component | 50 |
| Zetki Engines Mk III | Ship Component | 75 |
| Zetki Plating Mk I | Ship Component | 25 |
| Zetki Plating Mk II | Ship Component | 50 |
| Zetki Plating Mk III | Ship Component | 75 |
| Total | 2,145 (+100) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Research |  x1  x3  x10  x30  x100
| ||||||||
Last updated: Update 29.10 (2021-03-19)
Gathering Tips
These are based on opinions and may not be true. These should be viewed as advice unless proven undoubtedly true. Check the comment section for confirmation.
- Isos can be found in higher quantities on any Corpus Railjack mission (Venus Proxima, Neptune Proxima, Pluto Proxima, and Veil Proxima).
Trivia
Patch History
Update 27.0 (2019-12-13)
- Introduced.
- ↑ Chance to roll item within drop table
- ↑ Amount rewarded on successful roll
- ↑ (Quantity × Chance)
- ↑ Chance to roll drop table
- ↑ Chance to roll item within drop table
- ↑ (Drop Table Chance × Item Chance)
- ↑ (1 / Chance), see WARFRAME Wiki:Expected & Nearly Guaranteed Numbers for more details
- ↑ Amount rewarded on successful roll
- ↑ (Quantity × Chance), average item quantity on a roll attempt (successful or not)