Discharge System

A method of creating a discharge system for fluid with a predetermined particle size distribution of the particulate matters, said method comprising:

• providing a discharging device configured to accept the fluid through a discharge-side coupler;
• providing a refilling device configured to refill the discharging device with the fluid through a refill-side coupler;
• and,
• maintaining a clearance between sliding parts which slide upon the connection and disconnection of the discharge-side coupler and the refill-side coupler;
• the clearance being within a range of one time to six times of the standard deviation σ of the particle size distribution of a mode diameter, a median diameter, or a mean diameter of a predetermined particle size distribution of particulate matters of the fluid to be dispensed from the refilling device to the discharging device.

A method of handling a fluid with a predetermined particle size distribution of the particulate matters in a discharge system, said method comprising:

• providing a discharging device configured to accept the fluid through a discharge-side coupler;
• providing a refilling device configured to refill the discharging device with the fluid through a refill-side coupler;
• creating a clearance between sliding parts which slide upon the connection and disconnection of the discharge-side coupler and the refill-side coupler based on the predetermined particle size distribution of particulate matters that constitutes the fluid;
• and
• supplying the fluid from the refilling device side to the discharging device side.