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Ester is an upgrade material in Arknights.

Description

Ester used in industrial production. Can be used for a variety of upgrades and for production in the Factory.

One of the most important materials in modern industry. Its appearance has lead to the development of many modern products. This one, of course, is only a raw material that has practical application.

Usage

The first of the Ester-type upgrade materials, these organic substances have many uses, one of which includes Operator basic skill upgrades.

Acquisition

Store

Regular drops

Operation Sanity Drop rate Sanity per drop
Sanity icon.png
Guaranteed
 (~111%)
~5 Sanity icon.png
12 Sanity icon.png
Guaranteed
 (~251%)
~4 Sanity icon.png
Sanity icon.png
Guaranteed
Sanity icon.png
Guaranteed
Sanity icon.png
Guaranteed
Sanity icon.png
Guaranteed
Sanity icon.png
Common
12 Sanity icon.png
Guaranteed
Sanity icon.png
Guaranteed
Sanity icon.png
Guaranteed
12 Sanity icon.png
Uncommon
12 Sanity icon.png
Uncommon
12 Sanity icon.png
Uncommon
12 Sanity icon.png
Uncommon
12 Sanity icon.png
Uncommon
12 Sanity icon.png
Uncommon

As seen on the table above, the best operation to farm Ester is S2-7.

Extra drops

Trivia

  • In our world, ester is a high-quality solvent typically used in the production of plastics and resins, as well as synthetic lubricants.

See also

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