# Implementation of particle size distribution in CADET

**URL:** <https://forum.cadet-web.de/t/implementation-of-particle-size-distribution-in-cadet/992>\
**Category:** Chromatography Modeling\
**Created:** [July 14, 2024, 3:14pm UTC](https://forum.cadet-web.de/t/implementation-of-particle-size-distribution-in-cadet/992 "2024-07-14T15:14:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![nils.gehrmann1](https://forum.cadet-web.de/letter_avatar_proxy/v4/letter/n/dec6dc/32.png) [@nils.gehrmann1](https://forum.cadet-web.de/u/nils.gehrmann1)\
**Post date:** [July 14, 2024, 3:14pm UTC](https://forum.cadet-web.de/t/implementation-of-particle-size-distribution-in-cadet/992/1 "2024-07-14T15:14:19Z")

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Hi everyone,

I am currently using CADET-Process v 0.9.1 and trying to implement a combination of various particle radii in my model. Is it possible in CADET to define a particle size distribution in one GRM or do I have to define several ones? Setting the particle radius as a list does not work.

Thank you in advance!

Best  
Nils

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**Author:** ![j.schmoelder](https://forum.cadet-web.de/user_avatar/forum.cadet-web.de/j.schmoelder/32/93_2.png) [@j.schmoelder](https://forum.cadet-web.de/u/j.schmoelder)\
**Post date:** [July 14, 2024, 3:15pm UTC](https://forum.cadet-web.de/t/implementation-of-particle-size-distribution-in-cadet/992/2 "2024-07-14T15:15:33Z")

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Hi Nils,

this is currently not (yet) supported in CADET-Process (see [#4](https://github.com/fau-advanced-separations/CADET-Process/issues/4)). I do have an idea how to implement it but it’s currently not high on the priorities list. PRs are welcome, though.

Best

Jo