US 11,717,820 B2
Microfluidic device, production of a microfluidic device and method and system for performing inorganic determinations
Palak Sehgal, Copenhagen (DK); and Keenan Pinto, Copenhagen (DK)
Assigned to NORDETECT APS, Copenhagen (DK)
Filed by NORDETECT APS, Copenhagen (DK)
Filed on Sep. 16, 2022, as Appl. No. 17/946,778.
Application 17/946,778 is a continuation of application No. PCT/EP2021/056718, filed on Mar. 16, 2021.
Claims priority of application No. PA 2020 70172 (DK), filed on Mar. 17, 2020.
Prior Publication US 2023/0014592 A1, Jan. 19, 2023
Int. Cl. B01L 3/00 (2006.01)
CPC B01L 3/502707 (2013.01) [B01L 3/5023 (2013.01); B01L 3/527 (2013.01); B01L 2200/16 (2013.01); B01L 2300/0816 (2013.01); B01L 2400/0406 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A microfluidic device comprising a stack of at least two solid layers forming a microfluidic channel arrangement there between and at least one opening into the microfluidic channel arrangement wherein the microfluidic device comprises at least one reagent disc at least partly located in said microfluidic channel arrangement, wherein at least one said reagent disc comprises a membrane impregnated with an ionophore cocktail, comprising an ionophore for a target ion, and a color former, which ensures a color change upon reaction between the ionophore and the target ion.