What is the difference between wet and dry speed (amphetamine)?
Wet speed is speed dissolved in a solvent, for example methanol.
To get from wet speed to dry speed you have to let it dry for a while. The solvent will then evaporate. Solvents are toxic and you don’t want to ingest them. When the speed is dry, there is no difference from speed that was already dry when it was sold.
It is often thought that wet speed is better or fresher than dried. It would come straight from the source. But those solvents can just as easily be added again after cutting it. The fact that speed is wet tells you nothing about the quality. The test service also shows that wet speed is still often cut, for example with caffeine.
But to reduce the risks, it is better to let your speed dry first! That also makes it easier to use.