# Quartz processing - Stage 4 (technology)

internal name `quartz-mk04` · tier 7 (Production science pack, [tier 7](https://factorio.kalzumeus.com/tier/7.md))
HTML page: https://factorio.kalzumeus.com/tech/quartz-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 (2)

- [Intermetallics - Stage 4](https://factorio.kalzumeus.com/tech/intermetallics-mk04.md)
- [Silicon processing - Stage 3](https://factorio.kalzumeus.com/tech/silicon-mk03.md)

## Unlocks (2 recipes)

### Molten glass (`glass-5`)

- 6 s · tier 7
- Ingredients: 100 × [High grade quartz pulp](https://factorio.kalzumeus.com/fluid/high-grade-quartz-pulp.md), 1 × [Fuel rod MK 01](https://factorio.kalzumeus.com/item/fuelrod-mk01.md), 1 × [Sodium carbonate](https://factorio.kalzumeus.com/item/sodium-carbonate.md)
- Results: 1800 × [Molten glass](https://factorio.kalzumeus.com/fluid/molten-glass.md)
- Made in: Glassworks MK 01, Glassworks MK 02, Glassworks MK 03, Glassworks MK 04
- Unlocked by: [Quartz processing - Stage 4](https://factorio.kalzumeus.com/tech/quartz-mk04.md)

### High grade quartz pulp (`high-grade-quartz-pulp`)

- 3 s · tier 7
- Ingredients: 1 × [Purified quartz](https://factorio.kalzumeus.com/item/purified-quartz.md), 300 × [Water](https://factorio.kalzumeus.com/fluid/water.md), 100 × [Sulfuric acid](https://factorio.kalzumeus.com/fluid/sulfuric-acid.md)
- Results: 50 × [High grade quartz pulp](https://factorio.kalzumeus.com/fluid/high-grade-quartz-pulp.md)
- Made in: Flotation cell MK 01, Flotation cell MK 02, Flotation cell MK 03, Flotation cell MK 04
- Unlocked by: [Quartz processing - Stage 4](https://factorio.kalzumeus.com/tech/quartz-mk04.md)