Title:
METHOD OF REMOVING METAL IMPURITIES
Document Type and Number:
Japanese Patent JP2011194380
Kind Code:
A
Abstract:
To provide a method of removing metal impurities, which can remove efficiently metal impurities adhering to experimental instruments made of a fluororesin, etc. in a short time.
An ultrasonic cleaning of an acid solution in which an object to be cleaned made of the fluororesin is immersed is carried out in a warming state. Further, the method comprises a first cleaning process of immersing the object to be cleaned made of the fluororesin in a first acid solution to carry out the ultrasonic cleaning in the warming state, and a second cleaning process of immersing the object to be cleaned made of the fluororesin which finishes the first cleaning process in a second acid solution to carry out the ultrasonic cleaning in the warming state.
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Inventors:
NAKAGAWA KATSUHIRO
HONJO HIKARU
HONJO HIKARU
Application Number:
JP2010067155A
Publication Date:
October 06, 2011
Filing Date:
March 24, 2010
Export Citation:
Assignee:
TAIYO NIPPON SANSO CORP
International Classes:
B08B3/12
Foreign References:
| WO1999049997A1 | 1999-10-07 |
Attorney, Agent or Firm:
Kazuhiko Kido
Yoshihiko Kido
Yoshihiko Kido