Which is partly correct (the one vial claim is erroneous if you examine the entire document) as it seems the fact checkers only acutely referenced one highlighted sentence in the document..
However in this study out of the 110 objects only 28 were selected, as the author states below and the reasons why..
The conclusion states
What’s not studied here is whether the graphene detected is causing some sort of vaccination harm.. all this study provides is the conclusion that graphene oxide has been detected in objects that were studied using the scientific equipment described...
What has been a highlight is fact checkers are not necessarily the most reliable sources of truth when researching information..