Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1985-07-10
1986-12-02
Myracle, Jerry W.
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
G01C 2500
Patent
active
046255435
ABSTRACT:
A sample stream is conditioned by the addition of reagents and the ion concentration is measured by means of a measuring system which can be connected to an arrangement for releasing an appropriate calibrating substance. The calibrating substance used is a soluble glass for the defined release of a known quantity of the ions to be measured, and the reference concentration is established directly in the sample stream. There is therefore no need for a calibrating solution or a metering pump for the latter, and disturbances due to the undesired transfer of impurities and reactive ions are avoided. The method is particularly suitable for the analysis of Na.sup.+, the soluble glass being a sodium polyphosphate glass.
REFERENCES:
patent: 4016743 (1977-04-01), Henderson et al.
patent: 4288308 (1981-09-01), Hach
patent: 4350675 (1982-09-01), Drake
patent: 4473458 (1984-09-01), Schwartz et al.
Ertl Stefan
Jola Martin
Myracle Jerry W.
Zellweger Uster Ltd.
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