If you are working on an assembled car, Soap.
If you have the car disassembled, varsol solvent followed by soap.
I will suggest you to go for a professional service provider of Graffiti Removal in London for this task.
Best answer is to clean it off immediately while it is still wet. Once it has dried, it depends on the material the bathtub is composed of. If it's porcelain, use some lacquer thinner to melt the primer, then clean off the residue and polish. If it is fiberglass or plastic, then any solvent strong enough to remove the cured primer will also damage the surface of the bathtub. Use a razor blade to scrape off the primer, being careful to not damage the surface.
Best way I've found is power washing.
mixture of water and household bleach
The best way to clean a ceramic garden stool is to use a commercial cleaning product along with a cloth and water. You should spray the cleaning product on the stool and then give the stool a scrub with the cloth (a rough type of cloth would be better for this). Finally, rinse it with the water.
Any mild solvent or "eco" solvent will work fine. They all contain the same active ingredients.
vinegar is the best way to clean a penny out of the choices given.
The best way to clean out the inside of your custom motorcycle straight pipes is to remove the pipes and use a cleaning solvent and a rag with a long handled brush.
The best solvent of NaCl is water.
Please let me know best solvent of Calcium Carbonatr
You can brush it off with solvent then wipe it with a dry rag, or you can use some brake cleaner and wipe it with a dry rag.
The type of solvent that is best suited to dissolve an ionic or a highly polar solvent would also be highly polar, probably a polar protic solvent like water or alcohol.
There will be solvent for the plastic. -Find out WHAT plastic, then get the solvent. -A 'plastics' store or plumbing store is your best bet.
It is water.
Hexane is the best
Pivalic Acid
Water is considered the universal solvent.