Methods for cell sorters with pivotal scuppers

A method for a sorting flow cytometer system, the method comprising:

• forming a stream of a sample biological fluid;
• charging the stream of the sample biological fluid with a first voltage having a first voltage polarity;
• breaking a first charged drop off of the stream, wherein the first charged drop is charged with the first voltage;
• dropping the first charged drop between a first electrostatic charge plate and a second electrostatic charge plate opposite the first electrostatic charge plate, wherein the first electrostatic charge plate and the second electrostatic charge plate are positioned on an angle to form a progressively larger gap between each;
• deflecting the first charged drop off of a center stream path towards the first electrostatic charge plate to drop along a line with a first angle;
• and
• orienting a first pivotal scupper to allow the first charged drop to fall into a first test tube.

A method for a sorting flow cytometer system, the method comprising:

• forming a stream of a fluid along a center stream path;
• breaking an uncharged drop off of the stream of the fluid along the center stream path;
• dropping the uncharged drop between a first electrostatic charge plate and a second electrostatic charge plate opposite the first electrostatic charge plate, wherein the first electrostatic charge plate and the second electrostatic charge plate are positioned on an angle to form a progressively larger gap between each;
• aligning a non-pivotal center collector with the center stream path;
• and
• directing the uncharged drop into a tub for aspiration down a drain of the tub.