I am an intern at a Biotech company. We are developing this fungi scaffold-like/tissue. It's still an embryonic idea. The first prototype samples are the size of a regular petri dish.

Before I sent samples for biocompatibility tests, I came across the possibility of it having endotoxins on its surface, which could lead to negative results. At this point, I'm still not even sure if it has endotoxins, but as a preventive measure, what could I do to wash these lipopolysaccharides away?

Could buffers like PBS or maybe mili-Q water be effective? By the way, the tissue can handle autoclave temperatures but not a depyrogenation level (160 ºC or more).