Facilities Management - Environmental Testing - costs and providers

This SIG member from a buy-side company in the finance industry is seeking providers and cost estimates for environmental testing at their facilities in the continental U.S.. 

Specifically, they are in the initial stage of exploring testing the following two items in their facilities:

• building air quality 
• surface and bioaerosol virus testing (example: door handles)

Based on research there are several companies or kits (with bioaerosol devices) that can provide these services. 

If you have any experience with sourcing this service or self-testing equipment/kits, please provide details regarding: 

1 - Providers

2 - Cost structure

3 - Pricing (estimates are appreciated)