# Moss - Stage 4 (technology)

internal name `moss-mk04` · tier 8 (pY science pack 4, [tier 8](https://factorio.kalzumeus.com/tier/8.md))
HTML page: https://factorio.kalzumeus.com/tech/moss-mk04/

## Cost

3300 units of (1 × [pY science pack 4](https://factorio.kalzumeus.com/item/py-science-pack-4.md), 2 × [Production science pack](https://factorio.kalzumeus.com/item/production-science-pack.md), 3 × [pY science pack 3](https://factorio.kalzumeus.com/item/py-science-pack-3.md), 6 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md), 10 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 20 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 30 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 60 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md), 10 × [Military science pack](https://factorio.kalzumeus.com/item/military-science-pack.md)), 450 s each.

## Requires (4)

- [Botany - Stage 3](https://factorio.kalzumeus.com/tech/botany-mk03.md)
- [Moss - Stage 3](https://factorio.kalzumeus.com/tech/moss-mk03.md)
- [Organ printing - Stage 3](https://factorio.kalzumeus.com/tech/organ-printing-mk03.md)
- [Petroleum gas processing - Stage 2](https://factorio.kalzumeus.com/tech/petroleum-gas-mk02.md)

## Leads to (0)

- none

## Unlocks (3 recipes)

### Moss (`Moss-5`)

- 20 s · tier 8 · productivity modules allowed
- Ingredients: 100 × [Muddy sludge](https://factorio.kalzumeus.com/fluid/muddy-sludge.md), 100 × [Carbon dioxide](https://factorio.kalzumeus.com/fluid/carbon-dioxide.md), 20 × [Stone](https://factorio.kalzumeus.com/item/stone.md), 15 × [Coarse fraction](https://factorio.kalzumeus.com/item/coarse.md), 10 × [Limestone](https://factorio.kalzumeus.com/item/limestone.md), 5 × [Fertilizer](https://factorio.kalzumeus.com/item/fertilizer.md)
- Results: 40 × [Moss](https://factorio.kalzumeus.com/item/moss.md)
- Made in: Moss farm MK 01, Moss farm MK 02, Moss farm MK 03, Moss farm MK 04
- Unlocked by: [Moss - Stage 4](https://factorio.kalzumeus.com/tech/moss-mk04.md)

### Phase 4 moss breeding program (`moss-mk04`)

- 25 s · tier 8
- Ingredients: 100 × [Gene transfer agent (GTA)](https://factorio.kalzumeus.com/fluid/gta.md), 1 × [Immunosuppressants](https://factorio.kalzumeus.com/item/immunosupressants.md), 5 × [Moss MK 03](https://factorio.kalzumeus.com/item/moss-mk03.md), 5 × [Bhoddos](https://factorio.kalzumeus.com/item/bhoddos.md)
- Results: 0.02 × [Moss MK 04](https://factorio.kalzumeus.com/item/moss-mk04.md) (2% chance)
- Made in: Moss farm MK 01, Moss farm MK 02, Moss farm MK 03, Moss farm MK 04
- Unlocked by: [Moss - Stage 4](https://factorio.kalzumeus.com/tech/moss-mk04.md)

### Phase 4 moss cultivation and harvesting (`moss-mk04r`)

- 100 s · tier 8
- Ingredients: 2 × [Moss MK 04](https://factorio.kalzumeus.com/item/moss-mk04.md), 3 × [cDNA](https://factorio.kalzumeus.com/item/cdna.md), 5 × [Moss gene sample](https://factorio.kalzumeus.com/item/moss-gen.md), 2 × [Tissue engineered fat](https://factorio.kalzumeus.com/item/tissue-engineered-fat.md), 5 × [Chimeric proteins](https://factorio.kalzumeus.com/item/chimeric-proteins.md), 50 × [Tholins](https://factorio.kalzumeus.com/fluid/tholins.md), 100 × [Rich gas](https://factorio.kalzumeus.com/fluid/rich-gas.md)
- Results: 5 × [Moss MK 04](https://factorio.kalzumeus.com/item/moss-mk04.md)
- Made in: Botanical nursery MK 01, Botanical nursery MK 02, Botanical nursery MK 03, Botanical nursery MK 04
- Unlocked by: [Moss - Stage 4](https://factorio.kalzumeus.com/tech/moss-mk04.md)