Wikipedia:Articles for deletion/Ball-pen probe
A lot of the references fail , but I feel that the refs listed Special:PermanentLink/801887950|(as of now) at 20 and 22 are enough to show that this has been used by multiple independent research groups who published nontrivial data using it, that is as close as a scientific instrument can get to "notable
— NONE, NONE
Stance: keep
Cited policy: WP:INDY (Wikipedia:Reliable sources)