Device for detecting and measuring continuously surfactant subst

Details Device for detecting and measuring continuously surfactant subst Device for detecting and measuring continuously surfactant subst

1994-11-10

1996-08-20

Drodge, Joseph W.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

73 6448, 73 6452, 210175, 422 8205, B01D 1712, G01N 1302

Patent

active

055475663

ABSTRACT:
Gaseous bubbles are made to rise in two respective measuring columns (30,20) for purified reference water and for the water to be examined, which columns are supplied with descending currents and drained by respective ascending discharge columns (34,24) and overflows (36,26); the bubbles are measured with a konimeter on the rising sections, and the difference in rising times in the two columns is calculated, in order to determine the extent of the presence of surfactants.

REFERENCES:
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patent: 3030192 (1962-04-01), Schneider
patent: 3189533 (1965-06-01), Anscherlik
patent: 3259462 (1966-07-01), Anscherlik
patent: 3436188 (1969-04-01), Boyd et al.
patent: 3627494 (1971-12-01), Fahnrich
patent: 3913385 (1975-10-01), Jobe
patent: 4196615 (1980-04-01), Davis
patent: 4725407 (1988-02-01), Usui et al.
patent: 5167144 (1992-12-01), Schneider
patent: 5218841 (1993-06-01), Hool

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