Rideal

Definition

Rideal is a term associated with the Rideal-Walker coefficient, which measures the disinfectant power of a substance compared to phenol. It is used to gauge the effectiveness of antiseptics and disinfectants.

5 Must Know Facts For Your Next Test

1. The Rideal-Walker coefficient is calculated by comparing the time it takes to kill specific bacteria using the test substance versus phenol.
2. A higher Rideal-Walker coefficient indicates a more effective disinfectant.
3. It primarily tests against the bacterium Salmonella typhi.
4. The method was developed by Samuel Rideal and J.T. Walker in the early 20th century.
5. This measurement has largely been replaced by more modern techniques but remains historically significant.

Related terms

Phenol Coefficient:

A measure of disinfectant strength compared to phenol, similar to the Rideal-Walker coefficient.

Disinfectant: Chemical agents used to destroy harmful microorganisms on surfaces and objects.

Antiseptic:

Substances that inhibit or prevent microbial growth on living tissue.