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The Polyester is an upgrade material in Arknights.

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

Regular drops

Operation Sanity Drop rate Sanity per drop
Sanity icon.png
Common
 (~94%)
~9 Sanity icon.png
18 Sanity icon.png
Rare
 (~72%)
~25 Sanity icon.png
18 Sanity icon.png
Guaranteed
 (~108%)
~16 Sanity icon.png
18 Sanity icon.png
Guaranteed
15 Sanity icon.png
Guaranteed
 (~152%)
~9 Sanity icon.png
18 Sanity icon.png
Guaranteed
 (~108%)
~16 Sanity icon.png
12 Sanity icon.png
Uncommon
12 Sanity icon.png
Guaranteed
12 Sanity icon.png
Guaranteed
12 Sanity icon.png
Guaranteed
Sanity icon.png
Common
12 Sanity icon.png
Guaranteed
Sanity icon.png
Common
12 Sanity icon.png
Guaranteed
12 Sanity icon.png
Guaranteed
12 Sanity icon.png
Guaranteed

As seen on the table above, the best operation to farm Polyesters is S3-2.

Extra drops

Workshop

Product Material(s) LMD Morale Requires
Polyester.png
1
Ester.png
3
100 LMD icon.png Morale icon.png None

Trivia

  • In our world, polyester is a polymer substance commonly known for being used as a material for synthetic fibers.

See also

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