# Biotechnology - Stage 4 (technology)

internal name `biotech-mk04` · tier 7 (Production science pack, [tier 7](https://factorio.kalzumeus.com/tier/7.md))
HTML page: https://factorio.kalzumeus.com/tech/biotech-mk04/

## Cost

1200 units of (1 × [Production science pack](https://factorio.kalzumeus.com/item/production-science-pack.md), 2 × [pY science pack 3](https://factorio.kalzumeus.com/item/py-science-pack-3.md), 3 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md), 6 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 10 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 20 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 30 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md), 6 × [Military science pack](https://factorio.kalzumeus.com/item/military-science-pack.md)), 300 s each.

## Requires (1)

- [Production science pack](https://factorio.kalzumeus.com/tech/production-science-pack.md)

## Leads to (4)

- [Denatured seismite](https://factorio.kalzumeus.com/tech/cottongut-science-mk05.md)
- [Nanoelectromechanical systems](https://factorio.kalzumeus.com/tech/nems.md)
- [Pesticides - Stage 2](https://factorio.kalzumeus.com/tech/pesticides-mk02.md)
- [Pheromones](https://factorio.kalzumeus.com/tech/pheromones.md)

## Unlocks (3 recipes)

### Hyaline (`hyaline`)

- 10 s · tier 7 · productivity modules allowed
- Ingredients: 1 × [Bones](https://factorio.kalzumeus.com/item/bones.md), 5 × [Kmaut tendons](https://factorio.kalzumeus.com/item/tendon.md), 2 × [Chitin](https://factorio.kalzumeus.com/item/chitin.md), 3 × [Collagen](https://factorio.kalzumeus.com/item/collagen.md), 30 × [Fatty Acids](https://factorio.kalzumeus.com/fluid/fatty-acids.md)
- Results: 1 × [Hyaline](https://factorio.kalzumeus.com/item/hyaline.md)
- Made in: Biofactory MK 01, Biofactory MK 02, Biofactory MK 03, Biofactory MK 04
- Unlocked by: [Biotechnology - Stage 4](https://factorio.kalzumeus.com/tech/biotech-mk04.md)

### Oxalatic acid (`oxalic-acid-2`)

- 10 s · tier 7 · productivity modules allowed
- Ingredients: 1000 × [Blood](https://factorio.kalzumeus.com/fluid/blood.md), 1 × [Acrylic](https://factorio.kalzumeus.com/item/acrylic.md)
- Results: 1 × [Oxalatic acid](https://factorio.kalzumeus.com/item/oxalic-acid.md)
- Made in: Biofactory MK 01, Biofactory MK 02, Biofactory MK 03, Biofactory MK 04
- Unlocked by: [Biotechnology - Stage 4](https://factorio.kalzumeus.com/tech/biotech-mk04.md)

### Xyhiphoe blood separation (`xyhiphoe-hydrocyclone`)

- 30 s · tier 7 · productivity modules allowed
- Ingredients: 500 × [Pressurized water](https://factorio.kalzumeus.com/fluid/pressured-water.md), 50 × [Xyhiphoe blood](https://factorio.kalzumeus.com/fluid/arthropod-blood.md)
- Results: 100 × [Organic solvent](https://factorio.kalzumeus.com/fluid/organic-solvent.md)
- Made in: Hydrocyclone MK 01, Hydrocyclone MK 02, Hydrocyclone MK 03, Hydrocyclone MK 04
- Unlocked by: [Biotechnology - Stage 4](https://factorio.kalzumeus.com/tech/biotech-mk04.md)