Table 2.

Properties of common potentiometric probes used to study myocardial electrophysiology

Potentiometric Probe	Excitation Peak, nm [environment]	Excitation Range, nm	Emission Peak, nm [environment]	Emission Range, nm	ΔF/F, %	Ref. No.
RH-237	544 [EtOH]	400–680	790 [EtOH]	650–860	6	34, 68
DI-4-ANEPPS	475 [membrane bound]	370–570	617 [membrane bound]	570–850	8	30
PGH-I	608 [EtOH]		880 [EtOH]		18	81
DI-4-ANBDQBS	563 [EtOH]	500–700	820	700–900	15	62

EtOH, ethanol.