# Technical cleanliness knowledge base

> Articles and guides on technical cleanliness: VDA 19.1, VDA 19.2, ISO 16232 and ISO 14644, test methods and how to read test results.

Adres: https://p4cinternational.com/en/knowledge-base/

## Technical cleanliness knowledge base

Articles and guides on the technical cleanliness of parts and assembly: VDA 19.1, VDA 19.2, ISO 16232 and ISO 14644, test methods and how to read test results. The knowledge base of Parts4Cleaning, an accredited technical cleanliness laboratory (AB 1836).

### Articles

#### [CCC cleanliness code and particle size classes – how to read a test result](https://p4cinternational.com/en/knowledge-base/ccc-cleanliness-code-particle-size-classes/)

[Read more](https://p4cinternational.com/en/knowledge-base/ccc-cleanliness-code-particle-size-classes/)

### Guides to the standards

- [Technical cleanliness inspection to VDA 19.1 and ISO 16232](https://p4cinternational.com/en/technical-cleanliness/vda-19-1-iso-16232-cleanliness-inspection/)

- [Clean assembly to VDA 19.2](https://p4cinternational.com/en/technical-cleanliness/clean-assembly-vda-19-2/)

- [ISO 14644 cleanliness classes – cleanroom](https://p4cinternational.com/en/technical-cleanliness/iso-14644-cleanroom-classes/)