METHOD AND APPARATUS FOR THE MEASUREMENT OF POLLUTANTS IN LIQUIDS

WIPO Patent Application WO1994002836

A3

PCT No. PCT/GB93/01555 Sec. 371 Date Jan. 24, 1995 Sec. 102(e) Date Jan. 24, 1995 PCT Filed Jul. 23, 1993 PCT Pub. No. WO94/02836 PCT Pub. Date Feb. 3, 1994An apparatus for measuring the concentration of a contaminant in a fluid includes a measuring chamber in a fluid path, a first source of optical radiation of a predetermined wavelength adapted to direct the radiation through the measuring chamber, and a detector for detecting the radiation after passage through the measuring chamber. The fluid path also has a pump provided to urge a test fluid from a fluid source to the measuring chamber, the test fluid being subjected to containing the contaminant, a fluid processor to process the fluid to change an optical effect of the contaminant, an acid wash to inhibit the effect of precipitation of cations within the fluid path, a fluid bypass to bypass the fluid processor and a valve to alternately direct the fluid to the fluid processor and the bypass.

BRIGGS RONALD (GB)

PCT/GB1993/001555

April 28, 1994

July 23, 1993

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BRITISH TECH GROUP (GB)

G01N21/27; G01N21/85; G01N33/18; G01N15/06; G01N30/02; (IPC1-7): G01N21/27; G01N33/18

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