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 |
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.
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