Laboratory

Litmus Test — Learn about litmus paper and how to perform and interpret the litmus test.

Litmus Paper and the Litmus Test

This entry was posted on January 20, 2021 by Anne Helmenstine (updated on January 20, 2021)

What Is Filtration? — Get the filtration definition and learn about filtration processes. Learn the difference between a filter and a sieve.

What Is Filtration? Definition and Processes

This entry was posted on November 15, 2020 by Anne Helmenstine (updated on December 8, 2020)

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 October 7, 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 January 25, 2021)

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 November 17, 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 January 4, 2021)