Purifying Sulfuric Acid Drain Cleaner - NileRed

Making Sulfuric Acid using the Chamber Process

Distilling Sulfuric Acid with Some Mishaps - Doug's Lab

Make sulfuric acid from water and sulfur (electrobromine process, needs HBr) - NurdRage

Make Sulfuric Acid by the Catalytic Copper Chloride Process (from SO2, O2 and H2O) - NurdRage

Make Sulfuric acid (metabisulfite/oxidizer method) - NurdRage

Make Sulfuric Acid (Copper Sulfate Electrochemical Method) - NurdRage

Purify Sulfuric Acid by Distillation - NurdRage

Making Sulfuric Acid From Magnesium Sulfate : electrolysis with clay pot diaphragm - Scrap Science

Making Sulfuric Acid From Ammonium Sulfate (Fertiliser, slightly better than MgSO4) - Scrap Science

Making Sulfuric Acid by Electrolysis of CuSO4 - Aussie Chemist

How to make sulfuric acid from gypsum by membrane electrolysis - MysteriusBhoice