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Laboratory Cork Ring

Round-bottom flasks offer many advantages for chemical work that requires heating a liquid, but suffer from a major storage and handling drawback: They don’t sit flat on a work surface. The common solution is to equip the bench with one or more cork rings that the flasks can sit in,... Read more »

Making Soap

Just where and when humans first observed the chemical reaction between oil and potash is unknown. Legend says it may have occurred in ancient Rome, on Sapo Hill, in an unusual scenario where a creek flowed over a deposit of wood ash and animal fats, created through many years of... Read more »

Cable Dyeing

If you want an extension cord, power cord, or other plastic-insulated cable in an unusual color, and you can find one in white, there’s a good chance you can dye it to suit your preference using this technique. Turns out many cables are sheathed with PVC, and will take the... Read more »

Pneumatic Trough

Although it sounds like some kind of euphemism from Brave New World, a “pneumatic trough” is actually a very handy piece of classic chemistry lab kit. Besides providing a convenient means to collect samples of pure gases for various experiments, a pneumatic trough with a graduated container allows the easy... Read more »