The "Concoctanation Station"

The Concoctinator Chemistry Set is an item that was added in The Sims: Livin' Large and allows your Sims to create potions of varying effects.

Usage
Using this item increases the Sim's logic skill. However, if your Logic skill isn't very high, potions being made can easily blow up in the Sim's face, or go drastically wrong, creating a horrible smell that will waft around the neighborhood, causing the police to appear and fine you. Having a full logic skill (10/10) greatly reduces but does not eliminate the possibility of explosions or release of stench.

If a guest or friend that is in the house drinks any potion in the chemistry set, they will suddenly walk out of the house and cannot be interacted with.

The potions and their usages are as follows.

Potions

 * Blue: This maxes out three random needs and can be extremely useful.
 * Yellow: This reverses your Sim's personality forever. The reverse works simply on the 10-point scale; if you had 3 Nice points, you now have 7 Nice points and so on.
 * White: This can cure sickness, although it rarely appears.
 * Purple: This turns your Sim into a monster for a set amount of time. The monster will wander around the house to use items, which they always ends up breaking, especially the television. They also have a tendency of waking Sims up if it is in the same room as them.
 * Red: This makes your worst enemy in the neighborhood fall in love with your Sim. The neighborhood Sim that falls in love with your Sim appears next to your Sim.
 * Orange: This render your Sim invisible for a space of time (for 12 - 18 hours). Invisible Sims can't do much; they can interact with other Sims, but they can't interact back.
 * Dark Green: This makes a reverse clone of your Sim, which will wander around and eventually disappear. They tend to ruin your Sim's relationships with other people because they think the clone is you.
 * Light Green: This potion kills all of your Sim's Need bars to the point of almost empty. Should your Sim brew this potion, it is best not to drink it and instead sell the chemistry set and buy a new one.