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Micromachines 2015, 6(4), 423-436; doi:10.3390/mi6040423

A Disposable Dispensing Valve for Non-Contact Microliter Applications in a 96-Well Plate Format

1
Laboratory for MEMS Applications, IMTEK-Department of Microsystems Engineering, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
2
BioFluidix GmbH, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
This paper is an extended version of our paper published in the 2nd International Conference on Microfluidic Handling Systems, Freiburg, Germany, 8–10 October 2014.
*
Author to whom correspondence should be addressed.
Academic Editor: Nam-Trung Nguyen
Received: 27 February 2015 / Revised: 30 March 2015 / Accepted: 30 March 2015 / Published: 3 April 2015
View Full-Text   |   Download PDF [1684 KB, uploaded 13 April 2015]   |  

Abstract

We present a miniaturized, disposable, normally-closed electromagnetic dispensing valve for the microliter range to process 96-well plates. The novel injection-molded valve is designed to fit into a 9 mm grid to realize an eight channel dispensing head, enabling the serial processing of well plates row-by-row. The presented dispensing valve design originates from a miniaturization study of a previously developed functional model. The outer diameter of the valve, including all actuating components, was reduced by 8 mm to an overall diameter of 8.5 mm without compromising the performance. Additionally, the actuation current of the valve could be reduced to 5 A. The valve is characterized for a volume range between 840 nL and 5.3 μL. The performance of the injection molded valve is competitive to commercially available dispensing valves, featuring the advantages of low fabrication costs, disposability, low mounting size, easy handling, and super silent actuation. View Full-Text
Keywords: non-contact dispensing; electromagnetic valve; solenoid valve; normally-closed; disposable; 96-well plate format non-contact dispensing; electromagnetic valve; solenoid valve; normally-closed; disposable; 96-well plate format
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kartmann, S.; Koltay, P.; Zengerle, R.; Ernst, A. A Disposable Dispensing Valve for Non-Contact Microliter Applications in a 96-Well Plate Format. Micromachines 2015, 6, 423-436.

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