Sodium-binding benzofuran isophthalate – AM – ION Biosciences https://ionbiosciences.com Fluorescent Ion Indicators | Assay Kits Wed, 09 Jul 2025 22:14:12 +0000 en-US hourly 1 https://wordpress.org/?v=7.1.4 https://ionbiosciences.com/wp-content/uploads/ION-Bio-100x100.png Sodium-binding benzofuran isophthalate – AM – ION Biosciences https://ionbiosciences.com 32 32 PBFI K⁺ Salt https://ionbiosciences.com/store/pbfi-k-salt/ Wed, 28 Jun 2023 19:26:58 +0000 https://ionbiosciences.com/product/pbfi-k%e2%81%ba-salt/

PBFI is a UV-excitable, ratiometric green indicator for intracellular potassium (K⁺) measurements. Ex/Em: 340/505 nm can be used to measure K⁺-bound PBFI, and Ex/Em: 380/505 nm can be used to detect K⁺-free PBFI. It is 1.5X more selective for K⁺ over Na⁺and works well in cytosolic conditions where [K⁺]/[Na⁺] is ~10. Ratiometry is optimal for imaging applications where quantification of intracellular K⁺ concentrations is desired and reduces effects of photobleaching, heterogenous dye loading, and variable cell morphology. 

PBFI K⁺ salt is a membrane impermeable form of PBFI that can be used in lipid membrane-free systems, in liposomes, or can be introduced into cells by electroporation, microinjection, or other methods.

PBFI is the most used potassium indicator for measuring intracellular potassium concentrations.
PBFI AM_Monovalent_Divalent
]]> SBFI K⁺ Salt https://ionbiosciences.com/store/sbfi-k-salt/ Wed, 28 Jun 2023 19:26:48 +0000 https://ionbiosciences.com/?post_type=product&p=26647 SBFI is a UV-excitable, ratiometric green indicator for intracellular sodium (Na⁺) measurements. Ex/Em: 340/505 nm can be used to measure Na⁺-bound SBFI, and Ex/Em: 380/505 nm can be used to detect Na⁺-free SBFI. It is ~18X more selective for Na⁺ over K⁺. Ratiometry is optimal for imaging applications where quantification of intracellular Na⁺ concentrations is desired, and reduces effects of photobleaching, heterogenous dye loading, and variable cell morphology.

SBFI K⁺ salt is a membrane impermeable form of SBFI that can be used in lipid membrane-free systems, in liposomes, or can be introduced into cells by electroporation, microinjection or other methods.

SBFI salt, a ratiometric sodium indicator, banner

]]> SBFI AM https://ionbiosciences.com/store/sbfi-am/ Wed, 28 Jun 2023 19:26:48 +0000 https://ionbiosciences.com/?post_type=product&p=26648

SBFI is a UV-excitable, ratiometric green indicator for intracellular sodium (Na⁺) measurements. Ex/Em: 340/505 nm can be used to measure Na⁺-bound SBFI, and Ex/Em: 380/505 nm can be used to detect Na⁺-free SBFI. It is ~18X more selective for Na⁺ over K⁺. Ratiometry is optimal for imaging applications where quantification of intracellular Na⁺ concentrations is desired, and reduces effects of photobleaching, heterogenous dye loading, and variable cell morphology.

SBFI AM, a ratiometric intracellular sodium indicator, banner
SBFI AM_Monovalent_Divalent
]]>