Fluidic property determination from fluid impedances

A fluid analysis system, comprising:

• an electrical stimulus source to supply an electrical stimulus to an impedance sensor in a fluid chamber on a fluidic die;
• the fluidic die, wherein the fluidic die comprises:
• the fluid chamber to hold a volume of fluid to be analyzed;
• and
• an impedance sensor affixed within the fluid chamber to measure an impedance of the fluid in the fluid chamber based on the electrical stimulus;
• and
• an evaluator device to:
• determine a real component of the impedance;
• determine an imaginary component of the impedance;
• and
• determine at least one property of the fluid based on the real component of the impedance, the imaginary component of the impedance, and data describing the electrical stimulus.

A method;

• comprising:
• passing at least one electrical stimulus to an impedance sensor in a fluid chamber on a fluidic die;
• passing data describing the at least one electrical stimulus to an evaluator device;
• measuring, with an impedance sensor, an impedance of a fluid in the fluid chamber based on the at least one electrical stimulus;
• and
• determining at least one property of the fluid based on 1) at least one of the real component of the impedance and the imaginary component of the impedance and 2) the data describing the at least one electrical stimulus.