ION Biosciences sells the largest collection of potassium indicators. Included are the ION Potassium Green dyes, a family of potassium dyes with variable affinities and selectivity for K+. ION also sell PBFI AM, a ratiometric potassium indicator that has been used for decades to measure intracellular potassium concentrations.
Potassium channels are by far the largest and most structurally diverse class of ion channels and much remains unknown about their functions in normal physiology and disease. An increasingly long list of K⁺ channels and K⁺ transporters are being associated with a wide variety of disorders. Therefore, an effective potassium dye needs to be able to discriminate between K⁺, Na⁺ and other common physiological cations while possessing a K⁺ affinity appropriate to detect physiologically relevant changes in K⁺ concentrations. With ION’s catalog of potassium indicators, you’ll be able to find the appropriate product for your experimental needs.
