Refined Solvent

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The Refined Solvent is an upgrade material in Arknights, introduced alongside Episode 09.

Item description
A special coating made from a specific formulation process. Can be used for high level upgrades.

A coating held together by high-molecule polymers. In addition to its baseline protective capabilities, it has also gained other special characteristics, of which heat resistance is but one of many.


The second of Solvent-type upgrade materials, these improved Semi-Synthetic Solvents are needed for the skill Mastery training and Elite 2 promotion of certain Operators introduced from Episode 09 onwards.



Refined Solvents are available in:

  • Distinctions Store (sometimes) for 15 Distinction Certificate icon.png.
  • Headhunting Parametric Model Store for 70 Headhunting Parametric Model icon.png.

Special drops

Operation Sanity Drop rate
9-4 18 Very Rare (~5%)
9-18 21 Very Rare (~5%)
11-8 24 Very Rare
12-10 21 Very Rare
13-14 21 Very Rare


Product Material(s) LMD Morale Requires
Refined Solvent.png
Semi-Synthetic Solvent
Compound Cutting Fluid
Coagulating Gel
300 4 Level 3 Workshop
Clear 9-4

See also