Polyester
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The Polyester is an upgrade material in Arknights.
Item description
A small amount of polyester used in industrial production. Can be used for a variety of upgrades and for production in the Factory.
Although its[sic] is lacking in potency, it can still be used to produce some basic materials we need. It is also a common ingredient in some sustained-release drugs.
Usage
The second of Ester-type upgrade materials, these polymers derived from Ester have many uses, which includes Operator intermediate skill upgrades and their Elite 1 promotion.
Acquisition
Store
- Two Polyesters are sometimes available at the Credit Store for the base price of 200
. - Four Polyesters are available at the Headhunting Parametric Model Store for 25
.
Regular drops
| Operation | Sanity | Drop rate | Sanity per drop |
|---|---|---|---|
| 1-8 | 9 | Common (~94%) | ~9 |
| 6-5 | 18 | Rare (~72%) | ~25 |
| 6-9 | 18 | Guaranteed (~108%) | ~16 |
| R8-4 | 18 | Guaranteed | ? |
| 10-16 | 21 | Rare | ? |
| S3-2 | 15 | Guaranteed (~152%) | ~9 |
| S5-3 | 18 | Guaranteed (~108%) | ~16 |
| GT-4 | 12 | Uncommon | ? |
| SA-3 | 12 | Guaranteed | ? |
| TW-4 | 12 | Guaranteed | ? |
| RI-4 | 12 | Guaranteed | ? |
| FA-4 | 9 | Common | ? |
| MB-4 | 12 | Guaranteed | ? |
| BH-4 | 9 | Common | ? |
| WR-4 | 12 | Guaranteed | ? |
| OD-5 | 12 | Guaranteed | ? |
| SV-5 | 12 | Guaranteed | ? |
| NL-4 | 12 | Guaranteed | ? |
| BI-5 | 12 | Guaranteed | ? |
| IW-5 | 12 | Guaranteed | ? |
| SN-4 | 12 | Guaranteed | ? |
| IC-3 | 12 | Uncommon | ? |
| DV-3 | 12 | Uncommon | ? |
| IS-5 | 12 | Uncommon | ? |
| IS-6 | 15 | Guaranteed | ? |
| FC-3 | 12 | Guaranteed | ? |
| DC-5 | 15 | Guaranteed | ? |
| CW-4 | 12 | Guaranteed | ? |
| HE-4 | 12 | Guaranteed | ? |
| SL-4 | 12 | Guaranteed | ? |
| ZT-5 | 15 | Uncommon | ? |
Workshop
| Product | Material(s) | LMD | Morale | Requires |
|---|---|---|---|---|
 1 |
 3 |
100 | 1 | None |
Trivia
- In our world, polyester is a polymer substance commonly known for being used as a material for synthetic fibers.
See also
- Ester – T1 counterpart
- Polyester Pack – T3 counterpart
- Polyester Lump – T4 counterpart