Method for washing reaction tube

Details Method for washing reaction tube Method for washing reaction tube

1982-10-18

1984-04-24

Bashore, Jr., S. Leon

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 21, 134 2218, 422 81, 436 49, B08B 902

Patent

active

044445989

ABSTRACT:
A method for washing a U-shaped reaction tube having a thick cup portion and a thin non-cup portion is disclosed. At a first washing position, a washing liquid is supplied into the cup portion of reaction tube like a shower and is simultaneously sucked via the non-cup portion of reaction tube. Then, the washing liquid is supplied again into the reaction tube to fill the tube therewith at a second washing position. Finally, at a third washing position, the washing liquid contained in the reaction tube is drained at such a relatively slow rate that the liquid level of the washing liquid descends slowly. Any drop of the washing liquid is not remained on the inner wall of test tube, and thus it is possible to effect a highly accurate analysis without being affected by contamination between sample solutions.

REFERENCES:
patent: 3306229 (1967-02-01), Smythe
patent: 3592605 (1971-07-01), Noma et al.
patent: 3951605 (1976-04-01), Natelson
patent: 4227886 (1980-10-01), Bullock et al.
patent: 4263053 (1981-04-01), McKinnon, Jr.

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