[blueplum]

you meant 4 hours?

No viable virus could be measured after 4 hours on copper 37
for HCoV-19 and 8 hours for SARS-CoV-1, or after 24 hours on cardboard for HCoV-19 and 8 hours for 38
SARS-CoV-1 (Figure 1A).

https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v2.full.pdf

[Varsity Flight]

4 hours
https://www.google.com/amp/s/www.forbes.com/sites/ericmack/2020/03/15/new-coronavirus-study-shows-how-long-hcov-19-can-live-on-different-surfaces/amp/