How to Manage the Clenines Standard

The amount of contaminates that can make its way on to the spacecraft is huge. The number one source is from humans, the people that put the spacecraft tog. We have more microbes in and on our body than we have human cells. And yet we're fere touching these materials. It's your being able to manage those standards must be pretty tricky. So maybe you can give a slick a sense of how to think about the clenines standard. What is the hardest part of achieving them? Yas.