Highly parallel dispensing of chemical and biological reagents

de Heij, Bas; Daub, Martina; Gutmann, Oliver; Niekrawietz, Remigius; Sandmaier, Hermann; Zengerle, Roland
January 2004
Analytical & Bioanalytical Chemistry;Jan2004, Vol. 378 Issue 1, p119
Academic Journal
We present a technology for the highly parallel dispensing of a multitude of reagents. It allows one to dispense up to 96 different reagents simultaneously in a fixed array, in a volume range of 100 pL up to several nL. The pitch of the dispensed droplets can be as small as 500 µm. All channels are fired simultaneously, giving an unprecedented throughput. The system was originally developed for the high-throughput fabrication of microarrays, but can easily be adopted for other applications such as highly parallel filling of nanotiterplates. Based on our standard configuration we achieved droplets with 125-µm in-flight diameter (1.2 nL) with a CV of <1%.


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