---
title: What is Radon and where does it come from?
description: What is Radon and where does it come from?
---

[Skip to content](https://knowledge.emsl.com/en/emsl/knowlegebase/what-is-radon-and-where-does-it-come-from#main-content)

English

Show submenu for translations

![EMSL Logo Diamond](https://knowledge.emsl.com/hs-fs/hubfs/EMSL%20Logo%20Diamond.jpg?width=150&height=146&name=EMSL%20Logo%20Diamond.jpg)

Open main navigation

Close main navigation

- English
  
  Show submenu for translations
- Go to emsl.com

 Go to emsl.com

 Hello. How can we help you?

- There are no suggestions because the search field is empty.

1. [EMSL Knowledge Base](https://knowledge.emsl.com/en/emsl/knowlegebase?hsLang=en)
2. [FAQs](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs?hsLang=en)
3. [Radon](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs?hsLang=en#radon)

# What is Radon and where does it come from?

| Radon is a radioactive gas that comes from the radioactive decay of radium, which is a natural decay product of uranium. As a noble gas, radon is colorless, odorless, and chemically inert and cannot be detected by human sense. |
| --- |

- [FAQs](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs?hsLang=en#main-content)

    - [Lead & Metals/Chemistry/Industrial Hygiene](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs?hsLang=en#lead-metals-chemistry-industrial-hygiene)
    - [Microbiology](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs?hsLang=en#microbiology)
    - [Radon](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs?hsLang=en#radon)
    - [Food Microbiology](https://knowledge.emsl.com/en/emsl/knowlegebase/faqs?hsLang=en#food-microbiology)
- [Asbestos](https://knowledge.emsl.com/en/emsl/knowlegebase/asbestos?hsLang=en)

[![HubSpotFooterKnowledgeBAse](https://knowledge.emsl.com/hs-fs/hubfs/HubSpotFooterKnowledgeBAse.jpg?width=1200&height=300&name=HubSpotFooterKnowledgeBAse.jpg "HubSpotFooterKnowledgeBAse")](http://www.emsl.com)

 Copyright © 2026, EMSL Analytical, Inc.