Fluid distribution assembly for testing systems

A method of distributing fluid to testing systems comprising:

• supplying at least two fluids to a source selection component;
• selecting from the at least two fluids a target fluid using a user control;
• supplying the target fluid to a range selection component;
• selecting a flow range of the target fluid;
• based on the selected flow range, supplying the target fluid to one of a first flow adjustment component having a first flow rate resolution and a second flow adjustment component having a second flow rate resolution that is different than the first flow rate resolution;
• adjusting a flow rate of the target fluid with one of the first flow adjustment component and the second flow adjustment component;
• and
• after the adjusting step, discharging the target fluid through a delivery conduit directly to the testing system, wherein the testing system is a three-electrode electrochemical cell.

A fluid distribution assembly for supplying fluid to testing systems comprising:

• at least two input lines, each input line configured to supply a fluid;
• a source selector connected to each of the at least two input lines and configured to select a fluid based on a first user input, wherein the source selector provides fluid communication between one of the at least two input lines supplying the selected fluid and a source output conduit, and closes remaining of the at least two input lines;
• a flow range selector configured to receive the selected fluid from the source selector through the source output conduit and to select a flow range of the selected fluid based on a second user input;
• a first flow adjustor having a first flow rate resolution;
• and
• a second flow adjustor having a second flow rate resolution that is different than the first flow rate resolution, wherein the range selector is further configured to selectively output the selected fluid to one of the first flow adjustor through a first flow adjustment supply line and the second flow adjustor through a second flow adjustment supply line based on the second user input, and wherein each of the first flow adjustor and the second flow adjustor has a corresponding user control configured to fine tune the flow range of the selected fluid before entering a testing system.