EX+: Fine-grade Air Filter Materials III (Miner)
EX+: Fine-grade Air Filter Materials III
- Location
Sinus Ardorum (X:29.5, Y:5.3)- Class
MIN (missions)- Level
- 100
- Rank
- A
- Type
- Sequential
- Requires
- Development Log 13 (Lunar Nadir unlocked)
- Cosmocredits
21 84 105- Lunar Credits
23 92 115- Cosmic Data
6 24 30
6 24 30
6 24 30- Class Points
193 772 965- Previous mission
- EX: Fine-grade Air Filter Materials II (Miner)
- Patch
- 7.21
- Location
- The Frozen Briar
- Gathering Nodes
- (X:29.9, Y:6.7)
(X:28.4, Y:5.5)
(X:30.2, Y:4.2)
“It is imperative we care for the environment wherever the initiative takes us. With the goal of reducing any negative impacts of our operations in Sinus Ardorum, we have installed air filters on much of our infrastructure─from mini rover exhausts to the circulation systems used throughout the Moongate Hub. Filters require a catalyst to function, and to ensure maximum efficiency, these must be fabricated using locally sourced materials. Contributors are requested to aid us in acquiring the necessary resources.
— In-game description
EX+: Fine-grade Air Filter Materials III is a Class A sequential Stellar Mission in Sinus Ardorum. It requires Miner to complete.
Objectives
- Achieve the target score within the time limit.
- Chains and instances of Gatherer's Boon will be scored.
- Time Limit: 3 min
Score tiers
- Bronze: 5800 (minimum score for completion)
- Silver: 7000
- Gold: 7950
Gathered
Mission Score Values
Gatherer's Boon Scoring
| Score per Gatherer's Boon |
|---|
| 200 |
Chain Scoring
| Chain Count | Score per Hit | Cumulative Score |
|---|---|---|
| 0 | 0 | 0 |
| 1 | 50 | 50 |
| 2 | 50 | 100 |
| 3 | 50 | 150 |
| 4 | 150 | 300 |
| 5 | 200 | 500 |
| 6 | 200 | 700 |
| 7 | 200 | 900 |
| 8 | 200 | 1,100 |
Strategy
Due to the short mission timer, it is more time-efficient to increase odds of getting Boon on the first node and also increase the number of gathering attempts to improve the Chain score at the same time. Check both nodes near your start to see if one provides bonuses.
Gatherer's Boon is an effect which has a chance of happening when gathering. The higher your Perception rating, the better chance you have of triggering this effect.
Additionally, two actions increase the odds of triggering Gatherer's Boon. These effects last for until the node is exhausted, and can stack with each other:
Mountaineer's Gift II increases the chance of Gatherer's Boon by 30% for 100 GP.
Mountaineer's Gift I increases the chance of Gatherer's Boon by 10% for 50 GP.
The Chain count is based on consecutive successful gathering attempts from a single node. Getting the largest number of attempts on a single node is key.
Chain values of 3 or more give significantly more points, but these require specific actions to gain additional gathering attempts on a node.
- Starting GP of 900 is recommended; 600 GP is the next best option.
- Turn off automatic gathering. This way you will be able to use actions between gathering attempts.
- Use
Solid Reason to gain extra gathering attempts for 300 GP per use. This may also proc 
Wise to the World, which also grants an additional attempt but with no GP cost.
You can only use these abilities when the number of gathering attempts remaining for the node is less than the starting value (usually 4) and greater than 0.
History
Patch 7.3 (2025-08-05): Mission prefix changed from "A-3" to "EX+". Mission time limit increased from 3 min to 10 min.- Patch 7.25 (2025-05-27): Mission name changed from "A-3: Fine-grade Air Filter Materials II" to "A-3: Fine-grade Air Filter Materials III", clarifying that this was the third mission in the sequence and not the second.
- Patch 7.21 (2025-04-22): Mission created.