# Starch - Stage 2 (technology)

internal name `starch-mk02` · tier 4 (pY science pack 2, [tier 4](https://factorio.kalzumeus.com/tier/4.md))
HTML page: https://factorio.kalzumeus.com/tech/starch-mk02/

## Cost

500 units of (1 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 2 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 3 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 6 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md)), 90 s each.

## Requires (2)

- [Guar](https://factorio.kalzumeus.com/tech/guar.md)
- [Salt & salt accessories](https://factorio.kalzumeus.com/tech/salts.md)

## Leads to (1)

- [Starch - Stage 3](https://factorio.kalzumeus.com/tech/starch-mk03.md)

## Unlocks (2 recipes)

### Starch (`starch-2`)

- 3 s · tier 4 · productivity modules allowed
- Ingredients: 1 × [Powdered ralesia seeds](https://factorio.kalzumeus.com/item/powdered-ralesia-seeds.md), 1 × [Sodium sulfate](https://factorio.kalzumeus.com/item/sodium-sulfate.md), 1 × [Fiberboard](https://factorio.kalzumeus.com/item/fiberboard.md)
- Results: 10 × [Starch](https://factorio.kalzumeus.com/item/starch.md), 5 × [Biomass](https://factorio.kalzumeus.com/item/biomass.md)
- Made in: Solid separator MK 01, Solid separator MK 02, Solid separator MK 03, Solid separator MK 04
- Unlocked by: [Starch - Stage 2](https://factorio.kalzumeus.com/tech/starch-mk02.md)

### Starch (`starch-4`)

- 3 s · tier 4
- Ingredients: 100 × [Guar bean seeds](https://factorio.kalzumeus.com/item/guar-seeds.md), 1 × [Sodium sulfate](https://factorio.kalzumeus.com/item/sodium-sulfate.md), 1 × [Fiberboard](https://factorio.kalzumeus.com/item/fiberboard.md)
- Results: 10 × [Starch](https://factorio.kalzumeus.com/item/starch.md), 5 × [Biomass](https://factorio.kalzumeus.com/item/biomass.md)
- Made in: Pulp mill MK 01, Pulp mill MK 02, Pulp mill MK 03, Pulp mill MK 04
- Unlocked by: [Starch - Stage 2](https://factorio.kalzumeus.com/tech/starch-mk02.md)