# Chemical science pack (technology) internal name `chemical-science-pack` · tier 4 (pY science pack 2, [tier 4](https://factorio.kalzumeus.com/tier/4.md)) HTML page: https://factorio.kalzumeus.com/tech/chemical-science-pack/ ## Cost 1300 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 (3) - [Intermetallics - Stage 2](https://factorio.kalzumeus.com/tech/intermetallics-mk02.md) - [Pyrite](https://factorio.kalzumeus.com/tech/pyrite.md) - [Nuclear research](https://factorio.kalzumeus.com/tech/uranium-processing.md) ## Leads to (64) - [Additives](https://factorio.kalzumeus.com/tech/additives.md) - [Arthurians - Stage 1](https://factorio.kalzumeus.com/tech/arthurian.md) - [Biofilm](https://factorio.kalzumeus.com/tech/biofilm.md) - [Biotechnology machines - Stage 2](https://factorio.kalzumeus.com/tech/biotech-machines-mk02.md) - [Boron 2](https://factorio.kalzumeus.com/tech/boron-mk02.md) - [Braking force](https://factorio.kalzumeus.com/tech/braking-force-1.md) - [Cadaveric arums - Stage 2](https://factorio.kalzumeus.com/tech/cadaveric-arum-mk02.md) - [Cellulose - Stage 3](https://factorio.kalzumeus.com/tech/cellulose-mk03.md) - [Raw coal - Stage 3](https://factorio.kalzumeus.com/tech/coal-mk03.md) - [Coal processing](https://factorio.kalzumeus.com/tech/coal-processing-3.md) - [Coalbed methane extractor - Stage 2](https://factorio.kalzumeus.com/tech/coalbed-mk02.md) - [Cobalt processing - Stage 2](https://factorio.kalzumeus.com/tech/cobalt-mk02.md) - [Coke processing - Stage 3](https://factorio.kalzumeus.com/tech/coke-mk03.md) - [Collagen](https://factorio.kalzumeus.com/tech/collagen.md) - [Cooling tower](https://factorio.kalzumeus.com/tech/cooling-tower-2.md) - [Desulfurization](https://factorio.kalzumeus.com/tech/desulfurization.md) - [Diet beacon](https://factorio.kalzumeus.com/tech/diet-beacon.md) - [Distractor](https://factorio.kalzumeus.com/tech/distractor.md) - [Drill heads - Stage 2](https://factorio.kalzumeus.com/tech/drill-head-mk02.md) - [Drilling fluid - Stage 2](https://factorio.kalzumeus.com/tech/drilling-fluid-mk02.md) - [Electric energy distribution](https://factorio.kalzumeus.com/tech/electric-energy-distribution-4.md) - [Advanced electronics machines](https://factorio.kalzumeus.com/tech/electronics-machines-1.md) - [Energy generation](https://factorio.kalzumeus.com/tech/energy-3.md) - [Fertilizer](https://factorio.kalzumeus.com/tech/fertilizer.md) - [Fiberboard 2](https://factorio.kalzumeus.com/tech/fiberboard-mk02.md) - [Fiberglass](https://factorio.kalzumeus.com/tech/fiberglass.md) - [Follower robot count](https://factorio.kalzumeus.com/tech/follower-robot-count-3.md) - [Fuel production - Stage 2](https://factorio.kalzumeus.com/tech/fuel-production-mk02.md) - [Gas Power - Stage 2](https://factorio.kalzumeus.com/tech/gasplant-mk02.md) - [Grod - Stage 2](https://factorio.kalzumeus.com/tech/grod-mk02.md) - [Guar - Stage 2](https://factorio.kalzumeus.com/tech/guar-mk02.md) - [Heavy oil processing - Stage 2](https://factorio.kalzumeus.com/tech/heavy-oil-mk02.md) - [Inserter capacity bonus](https://factorio.kalzumeus.com/tech/inserter-capacity-bonus-3.md) - [Laser](https://factorio.kalzumeus.com/tech/laser.md) - [Laser shooting speed](https://factorio.kalzumeus.com/tech/laser-shooting-speed-1.md) - [Laser turret](https://factorio.kalzumeus.com/tech/laser-turret.md) - [Laser weapons damage](https://factorio.kalzumeus.com/tech/laser-weapons-damage-1.md) - [Light oil processing - Stage 3](https://factorio.kalzumeus.com/tech/light-oil-mk03.md) - [Microbiology - Stage 3](https://factorio.kalzumeus.com/tech/microbiology-mk03.md) - [Military](https://factorio.kalzumeus.com/tech/military-3.md) - [Mukmoux - Stage 2](https://factorio.kalzumeus.com/tech/mukmoux-mk02.md) - [Navens - Stage 2](https://factorio.kalzumeus.com/tech/navens-mk02.md) - [Nexelit processing - Stage 2](https://factorio.kalzumeus.com/tech/nexelit-mk02.md) - [Petroleum gas processing - Stage 2](https://factorio.kalzumeus.com/tech/petroleum-gas-mk02.md) - [Phagnots - Stage 1](https://factorio.kalzumeus.com/tech/phagnot.md) - [Physical projectile damage](https://factorio.kalzumeus.com/tech/physical-projectile-damage-5.md) - [Phytomining - Stage 2](https://factorio.kalzumeus.com/tech/phytomining-mk02.md) - [Processing unit](https://factorio.kalzumeus.com/tech/processing-unit.md) - [Nexelit-powered accumulators](https://factorio.kalzumeus.com/tech/py-accumulator-mk01.md) - [Logistics warehousing](https://factorio.kalzumeus.com/tech/py-warehouse-logistics-research.md) - [Advanced Rare earth technology](https://factorio.kalzumeus.com/tech/rare-earth-tech-mk02.md) - [Refined flammables](https://factorio.kalzumeus.com/tech/refined-flammables-3.md) - [Lab research speed](https://factorio.kalzumeus.com/tech/research-speed-3.md) - [Rubber](https://factorio.kalzumeus.com/tech/rubber-3.md) - [Smelters - Stage 2](https://factorio.kalzumeus.com/tech/smelters-mk02.md) - [Solar Power - Stage 1](https://factorio.kalzumeus.com/tech/solar-power-mk01.md) - [Stronger explosives](https://factorio.kalzumeus.com/tech/stronger-explosives-3.md) - [Tank](https://factorio.kalzumeus.com/tech/tank.md) - [T.U.R.D. reselect](https://factorio.kalzumeus.com/tech/turd-partial-respec-1.md) - [Uranium mining](https://factorio.kalzumeus.com/tech/uranium-mining.md) - [Vanadium processing](https://factorio.kalzumeus.com/tech/vanadium-processing-2.md) - [Vatbrain research boost - Stage 2](https://factorio.kalzumeus.com/tech/vatbrain-mk02.md) - [Weapon shooting speed](https://factorio.kalzumeus.com/tech/weapon-shooting-speed-5.md) - [Worker robot speed](https://factorio.kalzumeus.com/tech/worker-robots-speed-2.md) ## Unlocks (2 recipes) ### Chemical science pack (`chemical-science-pack`) - 240 s · tier 4 · productivity modules allowed - Ingredients: 10 × [Optical fiber](https://factorio.kalzumeus.com/item/optical-fiber.md), 2 × [Complex circuit board](https://factorio.kalzumeus.com/item/advanced-circuit.md), 3 × [Advanced small parts](https://factorio.kalzumeus.com/item/small-parts-02.md), 20 × [Stainless steel](https://factorio.kalzumeus.com/item/stainless-steel.md), 20 × [Nexelit plate](https://factorio.kalzumeus.com/item/nexelit-plate.md), 10 × [Rubber](https://factorio.kalzumeus.com/item/rubber.md), 1 × [Nuclear sample](https://factorio.kalzumeus.com/item/nuclear-sample.md), 50 × [Organic Acid Anhydride](https://factorio.kalzumeus.com/fluid/organic-acid-anhydride.md), 2 × [Self assembly monolayer material](https://factorio.kalzumeus.com/item/self-assembly-monolayer.md), 1 × [Mechanical Parts 01](https://factorio.kalzumeus.com/item/mechanical-parts-01.md) - Results: 12 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md) - Made in: Research center MK 01, Research center MK 02, Research center MK 03, Research center MK 04 - Unlocked by: [Chemical science pack](https://factorio.kalzumeus.com/tech/chemical-science-pack.md) ### Nuclear sample (`nuclear-sample`) - 5 s · tier 4 · productivity modules allowed - Ingredients: 1 × [Plutonium 238](https://factorio.kalzumeus.com/item/pu-238.md), 1 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md), 100 × [Boric acid](https://factorio.kalzumeus.com/fluid/boric-acid.md), 100 × [Industrial solvent](https://factorio.kalzumeus.com/fluid/industrial-solvent.md), 50 × [Aromatics](https://factorio.kalzumeus.com/fluid/aromatics.md) - Results: 1 × [Nuclear sample](https://factorio.kalzumeus.com/item/nuclear-sample.md) - Made in: Mixer MK 01, Mixer MK 02, Mixer MK 03, Mixer MK 04 - Unlocked by: [Chemical science pack](https://factorio.kalzumeus.com/tech/chemical-science-pack.md)