I think that if we have a bunch of guards in a circle surrounding scp 173 on all sides with some people next to him.
We could make them cover scp 173 in the same substances he's assumed to be made of until he is a round ball.
It should get rid of his arms and legs and maybe it could also test if he breaths.
And this is why I've requested a testing session.
Scp 173 breached containment after a twelve hour test session involving 20 personnel. The test had transformed scp 173 into a completely round ball. Following the test 12 guard and 1 researcher were killed by scp 173 after the lights flickered suddenly. Cause of death was different then before.
Death was caused by impact with scp 173 rolling into them at an incredible speed, during which scp 173 didn't stop rolling after it made its kills and armed the containment door causing a breach that took 7hrs to recapture scp173.
During recapture scp 173 shattered into its former self as it hit a heavy containment zone wall.
Among the bodies found, a cats body was found to be the first killed, identified as (Dr,nurse,female researcher) pebbleshine.
Later it was found the request for this test was made by Pebbleshine.