Nozzle cleaning method, nozzle cleaning device, and automatic analyzer
A nozzle cleaning method includes cleaning an outer wall of a dispenser nozzle after liquid is sucked and before the liquid is discharged and cleaning at least an inner wall of the dispenser nozzle after the liquid is discharged.
1. A nozzle cleaning method comprising:
a first cleaning step including cleaning an outer wall of a dispenser nozzle after liquid is sucked into the nozzle and before the liquid is discharged from the nozzle; and
a second cleaning step including cleaning at least an inner wall of the dispenser nozzle after the liquid is discharged,
wherein the first cleaning step includes inserting the dispenser nozzle into a retention unit in which cleaning fluid is retained, and flowing out cleaning fluid from an opening of the retention unit which retains the cleaning fluid to outside of a cleaning vessel in which the nozzle cleaning is conducted.
2. The nozzle cleaning method according to claim 1 , wherein the first cleaning step includes, after the dispenser nozzle is cleaned, discarding a portion of the liquid sucked into the dispenser nozzle.
3. The nozzle cleaning method according to claim 1 , wherein the first cleaning step includes moving the dispenser nozzle in a longitudinal direction thereof while having the dispenser nozzle entered into a flow path of cleaning fluid being jet out.
4. The nozzle cleaning method according to claim 2 , wherein the first cleaning step includes moving the dispenser nozzle in a longitudinal direction thereof while having the dispenser nozzle entered into a flow path of cleaning fluid being jet out.