Commitments	3 Months Ended
Mar. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Commitments	Note 9 – Commitments Registration and other stockholder rights In connection with the various investment transactions, the Company entered into registration rights agreements with stockholders, pursuant to which the investors were granted certain demand registration rights and/or piggyback and/or resale registration rights in connection with subsequent registered offerings of the Company’s common stock. Supply agreements In June 2017, the Company entered into an agreement with Life Technologies Corporation (“LTC”) to supply the Company with QuantStudio 5 Real-Time PCR Systems (“QuantStudio 5”) to be used to run OpGen’s Acuitas AMR Gene Panel tests. Under the terms of the agreement, the Company must notify LTC of the number of QuantStudio 5s that it commits to purchase in the following quarter. As of March 31, 2019, the Company has acquired eighteen QuantStudio 5s including three in the three months ended March 31, 2019. As of March 31, 2019, the Company has committed to acquiring an additional three QuantStudio 5s at a total cost of approximately $135,000 in the next three months.

Commitments

3 Months Ended

Mar. 31, 2019

Commitments And Contingencies Disclosure [Abstract]

Note 9 – Commitments

Registration and other stockholder rights

In connection with the various investment transactions, the Company entered into registration rights agreements with stockholders, pursuant to which the investors were granted certain demand registration rights and/or piggyback and/or resale registration rights in connection with subsequent registered offerings of the Company’s common stock.

Supply agreements

In June 2017, the Company entered into an agreement with Life Technologies Corporation (“LTC”) to supply the Company with QuantStudio 5 Real-Time PCR Systems (“QuantStudio 5”) to be used to run OpGen’s Acuitas AMR Gene Panel tests. Under the terms of the agreement, the Company must notify LTC of the number of QuantStudio 5s that it commits to purchase in the following quarter. As of March 31, 2019, the Company has acquired eighteen QuantStudio 5s including three in the three months ended March 31, 2019. As of March 31, 2019, the Company has committed to acquiring an additional three QuantStudio 5s at a total cost of approximately $135,000 in the next three months.