# Product certifications

**URL:** <https://community.particle.io/t/product-certifications/10443>\
**Category:** Product Creation\
**Created:** [March 6, 2015, 1:57am UTC](https://community.particle.io/t/product-certifications/10443 "2015-03-06T01:57:55Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![bko](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/bko/32/20704_2.png) [@bko](https://community.particle.io/u/bko)\
**Post date:** [March 6, 2015, 4:12pm UTC](https://community.particle.io/t/product-certifications/10443/5 "2015-03-06T16:12:13Z")

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Hi @matt_ri

I am guessing the the RI in your username could be a New England state–if so I have used these folks:

[http://www.testsiteservices.com/](http://www.testsiteservices.com/)

As @hfiennes said, you are much better off having your ferrites and caps already in place on your board **before** you go for testing. A roll of copper foil tape can be useful too–in my case the plastic enclosure with nickel spray shielding on the inside worked great except at the ends where we need a little redesign.

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