The company said it will use the proceeds of the offering for, among other things, development of its Acuitas rapid antibiotic resistance diagnostic product candidate.
The firm does not meet a listing requirement calling for at least $2.5 million in stockholders equity and has 45 days to submit a plan to regain compliance.
The company also reported that its preliminary full-year 2016 revenues rose 27 percent year over year, thanks to steady sales in its QuickFISH business.
Merck will provide OpGen with access to its library of bacterial pathogens in order to support OpGen's development of rapid DNA tests and a pathogens database.