Laboratory

Thymolphthalein pH Indicator — Learn how to make thymolphthalein pH indicator. Learn about its color, uses, and where to buy it.

How to Make Thymolphthalein pH Indicator

This entry was posted on September 9, 2020 by Anne Helmenstine (updated on September 10, 2020)

Important Lab Safety Rules — Here are important lab safety rules and guidelines

Lab Safety Rules and Guidelines

This entry was posted on August 11, 2020 by Anne Helmenstine (updated on August 11, 2020)

It's easy to make potassium chlorate at home using bleach and salt substitute.

How to Make Potassium Chlorate at Home From Bleach and ...

This entry was posted on July 18, 2020 by Anne Helmenstine (updated on September 10, 2020)

EDTA isn't soluble in water unless the pH is at least 8, so you need to add NaOH to make EDTA solution.

How to Make EDTA Solution

This entry was posted on July 6, 2020 by Anne Helmenstine (updated on August 1, 2020)

Always add acid to water, not water to acid. — Always add acid to water, not water to acid. Otherwise, the acid can splatter and splash up.

Add Acid to Water or Water to Acid? Safely Diluting ...

This entry was posted on May 17, 2020 by Anne Helmenstine (updated on August 1, 2020)

Piranha solution gets its name for its aggressive attack of organic material, like a school of piranha having a feeding frenzy. — Piranha solution is an aqueous mixture of sulfuric acid (H2SO4) and hydrogen peroxide (H2O2) that is used to remove organic residue from surfaces and make them more hydrophilic. It is also known as piranha etch because another common use is etching circuit boards. Piranha solution is wicked stuff, so read […]

Piranha Solution Preparation, Use, and Safety

This entry was posted on May 4, 2020 by Anne Helmenstine (updated on August 1, 2020)